1---2name: azure-cosmos-db3description: Expert knowledge for Azure Cosmos DB development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. Use when using Cosmos DB NoSQL/Mongo/Cassandra/PostgreSQL APIs, change feed, vector search, global distribution, or HTAP workloads, and other Azure Cosmos DB related development tasks. Not for Azure Table Storage (use azure-table-storage), Azure SQL Database (use azure-sql-database), Azure SQL Managed Instance (use azure-sql-managed-instance), Azure Blob Storage (use azure-blob-storage). Use when this capability is needed.4---5# Azure Cosmos DB Skill67This skill provides expert guidance for Azure Cosmos DB. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.89## How to Use This Skill1011> **IMPORTANT for Agent**: This file may be large. Use the **Category Index** below to locate relevant sections, then use `read_file` with specific line ranges (e.g., `L136-L144`) to read the sections needed for the user's question12This skill requires **network access** to fetch documentation content.13Use `mcp_microsoftdocs:microsoft_docs_fetch` to retrieve full articles.14- **Fallback**: Use the built-in `WebFetch` tool if the Microsoft Learn MCP server is not available.1516## Category Index1718| Category | Lines | Description |19|----------|-------|-------------|20| Troubleshooting | L31-L83 | Diagnosing and fixing Cosmos DB issues across APIs and SDKs: errors (400–503, 401/403/404/409/429), timeouts, performance, connectivity, CMK/backup, and using metrics/logs for root-cause analysis. |21| Best Practices | L85-L143 | Performance, scaling, partitioning, indexing, cost optimization, SDK usage, and HA/DR best practices for Cosmos DB (NoSQL, MongoDB, Cassandra, PostgreSQL) and legacy DocumentDB. |22| Decision Making | L145-L199 | Guides for choosing Cosmos DB options (consistency, throughput, backup, analytics, vector search), estimating cost/RUs, and planning/migrating workloads across APIs (Core, Mongo, Cassandra, PostgreSQL). |23| Architecture & Design Patterns | L201-L242 | Architectural patterns for Cosmos DB and PostgreSQL: multitenancy, sharding, HA/DR, change feed, HTAP, real-time analytics, and AI/LLM agents, memory, vectors, and semantic caching. |24| Limits & Quotas | L244-L282 | Limits, quotas, and behaviors for Cosmos DB (all APIs, backup modes, autoscale, serverless, free tier), plus PostgreSQL/Cassandra/Table/MongoDB constraints, RUs, partitions, and capacity usage. |25| Security | L284-L349 | Securing Cosmos DB and related services: identity/RBAC, keys and encryption, network isolation (VNet, firewalls, Private Link), TLS, auditing, policies, and Defender-based threat protection. |26| Configuration | L351-L477 | Configuring and deploying Cosmos DB (all APIs) and DocumentDB: throughput, indexing, TTL, backup/restore, global distribution, search/vector, emulators, monitoring, and infrastructure-as-code. |27| Integrations & Coding Patterns | [references/integrations.md](references/integrations.md) | SDK patterns, change feed, vector search, and integration guides for Cosmos DB across APIs (NoSQL, Mongo, Cassandra, PostgreSQL, Gremlin, DocumentDB) plus Kafka, Spark, BI, and migration tools. |28| Deployment | [references/deployment.md](references/deployment.md) | Deploying and managing Cosmos DB and Azure DocumentDB: ARM/Bicep/Terraform templates, CI/CD, scaling, backup/restore, upgrades, maintenance, and start/stop operations for various APIs. |2930### Troubleshooting31| Topic | URL |32|-------|-----|33| Run diagnostic log queries for Cosmos DB Cassandra | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/diagnostic-queries |34| Use Log Analytics to diagnose Cosmos DB Cassandra server errors | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/error-codes-solution |35| FAQ and troubleshooting for Cassandra API materialized views | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/materialized-views-faq |36| Troubleshoot common Cosmos DB Cassandra API errors | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/troubleshoot-common-issues |37| Resolve NoHostAvailableException and NoNodeAvailableException in Cosmos DB Cassandra | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/troubleshoot-nohostavailable-exception |38| Troubleshoot revoked-state Cosmos DB CMK accounts | https://learn.microsoft.com/en-us/azure/cosmos-db/cmk-troubleshooting-guide |39| Use advanced diagnostics queries to troubleshoot Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/diagnostic-queries |40| Query diagnostics logs for Cosmos DB Gremlin issues | https://learn.microsoft.com/en-us/azure/cosmos-db/gremlin/diagnostic-queries |41| Use diagnostics queries to troubleshoot Cosmos DB MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/diagnostic-queries |42| Troubleshoot common Cosmos DB MongoDB errors | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/error-codes-solutions |43| Prevent rate-limiting errors in Cosmos DB MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/prevent-rate-limiting-errors |44| Troubleshoot query performance in Cosmos DB MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/troubleshoot-query-performance |45| Troubleshoot with aggregated diagnostics logs for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-aggregated-logs |46| Write basic diagnostics queries to troubleshoot Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-logs-basic-queries |47| Monitor normalized request units for workload analysis | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-normalized-request-units |48| Analyze request unit consumption for Cosmos DB operations | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-request-unit-usage |49| Diagnose server-side latency with Cosmos DB metrics | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-server-side-latency |50| Resolve common issues with Cosmos DB partial document updates | https://learn.microsoft.com/en-us/azure/cosmos-db/partial-document-update-faq |51| Determine true distributed table size in Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-table-size |52| Troubleshoot connection issues to Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-troubleshoot-common-connection-issues |53| Resolve read-only state in Cosmos DB for PostgreSQL clusters | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-troubleshoot-read-only |54| Run diagnostic queries for distributed clusters | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-useful-diagnostic-queries |55| Resolve issues with same-account continuous backup restore | https://learn.microsoft.com/en-us/azure/cosmos-db/restore-in-account-continuous-backup-frequently-asked-questions |56| Use Azure SRE Agent to diagnose Cosmos DB issues | https://learn.microsoft.com/en-us/azure/cosmos-db/site-reliability-engineering-agent |57| Fix Cosmos DB 400 bad request and partition key errors | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-bad-request |58| Troubleshoot Azure Functions triggers for Cosmos DB change feed | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-changefeed-functions |59| Troubleshoot cross-tenant CMK issues in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-cmk |60| Troubleshoot Cosmos DB 409 conflict exceptions | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-conflict |61| Troubleshoot Azure Cosmos DB .NET SDK issues | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-dotnet-sdk |62| Resolve Cosmos DB .NET 'request header too large' errors | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-dotnet-sdk-request-header-too-large |63| Fix HTTP 408 timeouts in Cosmos DB .NET SDK | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-dotnet-sdk-request-time-out |64| Troubleshoot slow requests in Cosmos DB .NET SDK | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-dotnet-sdk-slow-request |65| Troubleshoot Cosmos DB 403 forbidden exceptions | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-forbidden |66| Diagnose and troubleshoot Cosmos DB async Java SDK v2 | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-java-async-sdk |67| Fix HTTP 408 timeouts in Cosmos DB Java v4 SDK | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-java-sdk-request-time-out |68| Resolve service unavailable errors in Cosmos DB Java v4 SDK | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-java-sdk-service-unavailable |69| Diagnose and troubleshoot Cosmos DB Java SDK v4 issues | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-java-sdk-v4 |70| Troubleshoot Cosmos DB 404 not found exceptions | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-not-found |71| Diagnose and troubleshoot Cosmos DB Python SDK issues | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-python-sdk |72| Troubleshoot Azure Cosmos DB query performance issues | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-query-performance |73| Resolve Cosmos DB 429 request rate too large errors | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-request-rate-too-large |74| Fix Azure Cosmos DB HTTP 408 request timeouts | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-request-time-out |75| Diagnose Cosmos DB SDK availability in multi-region setups | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-sdk-availability |76| Resolve Cosmos DB service unavailable (503) exceptions | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-service-unavailable |77| Resolve Cosmos DB unauthorized (401) exceptions | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-unauthorized |78| Use Cosmos DB metrics and insights to debug issues | https://learn.microsoft.com/en-us/azure/cosmos-db/use-metrics |79| Resolve common Azure DocumentDB questions and issues | https://learn.microsoft.com/en-us/azure/documentdb/faq |80| Troubleshoot CMK encryption issues in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/how-to-database-encryption-troubleshoot |81| Troubleshoot common Azure DocumentDB errors and issues | https://learn.microsoft.com/en-us/azure/documentdb/troubleshoot-common-issues |82| Troubleshoot Azure DocumentDB replication connectivity and performance | https://learn.microsoft.com/en-us/azure/documentdb/troubleshoot-replication |8384### Best Practices85| Topic | URL |86|-------|-----|87| Apply automated performance and cost recommendations in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/automated-recommendations |88| Benchmark Azure Cosmos DB for NoSQL with YCSB | https://learn.microsoft.com/en-us/azure/cosmos-db/benchmarking-framework |89| Best practices for Azure Cosmos DB .NET SDK v3 | https://learn.microsoft.com/en-us/azure/cosmos-db/best-practice-dotnet |90| Best practices for Azure Cosmos DB Java SDK v4 | https://learn.microsoft.com/en-us/azure/cosmos-db/best-practice-java |91| Best practices for Azure Cosmos DB Python SDK | https://learn.microsoft.com/en-us/azure/cosmos-db/best-practice-python |92| Apply performance best practices for Cosmos DB JavaScript SDK | https://learn.microsoft.com/en-us/azure/cosmos-db/best-practices-javascript |93| Adapt Apache Cassandra applications to Cosmos DB Cassandra API | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/adoption |94| Apply recommended Cosmos DB Cassandra driver extension settings | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/driver-extensions |95| Implement lightweight transactions in Cosmos DB Cassandra API | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/lightweight-transactions |96| Use materialized views in Cosmos DB Cassandra API (preview) | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/materialized-views |97| Avoid rate-limiting errors with server-side retries in Cassandra API | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/prevent-rate-limiting-errors |98| Use secondary indexing in Cosmos DB Cassandra API | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/secondary-indexing |99| Design resilient Cosmos DB SDK client applications | https://learn.microsoft.com/en-us/azure/cosmos-db/conceptual-resilient-sdk-applications |100| Configure conflict resolution policies for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/conflict-resolution-policies |101| Choose an IoT partition key strategy for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/design-partitioning-iot |102| Plan Cosmos DB disaster recovery and failover | https://learn.microsoft.com/en-us/azure/cosmos-db/disaster-recovery-guidance |103| Apply Cosmos DB best practices via Agent Kit | https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/agent-kit |104| Apply Cosmos DB-aware GitHub Copilot practices in VS Code | https://learn.microsoft.com/en-us/azure/cosmos-db/github-copilot-visual-studio-code-best-practices |105| Use hierarchical partition keys in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/hierarchical-partition-keys |106| Redistribute Cosmos DB throughput across partitions | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-redistribute-throughput-across-partitions |107| Use Cosmos DB indexing metrics to tune performance | https://learn.microsoft.com/en-us/azure/cosmos-db/index-metrics |108| Handle large partition keys and avoid collisions in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/large-partition-keys |109| Model and partition Cosmos DB data with a real example | https://learn.microsoft.com/en-us/azure/cosmos-db/model-partition-example |110| Redistribute throughput across Cosmos MongoDB partitions | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/distribute-throughput-across-partitions |111| Optimize indexing for Cosmos DB for MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/indexing |112| Optimize write performance in Cosmos DB MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/optimize-write-performance |113| Optimize Azure Cosmos DB MongoDB after migration | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/post-migration-optimization |114| Prepare MongoDB workloads for Cosmos DB migration | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/pre-migration-steps |115| Use MongoDB read preference with Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/readpreference-global-distribution |116| Optimize Azure Cosmos DB costs for dev and production | https://learn.microsoft.com/en-us/azure/cosmos-db/optimize-costs |117| Apply partitioning and scaling best practices in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/partitioning |118| Improve performance with Cosmos DB .NET SDK v2 | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips |119| Performance tips for Cosmos DB Async Java SDK v2 | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-async-java |120| Improve performance with Cosmos DB .NET SDK v3 | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-dotnet-sdk-v3 |121| Performance tips for Cosmos DB Sync Java SDK v2 | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-java |122| Improve performance with Cosmos DB Java SDK v4 | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-java-sdk-v4 |123| Optimize Azure Cosmos DB Python SDK performance | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-python-sdk |124| Optimize query performance with Cosmos DB SDKs | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-query-sdk |125| Monitor and tune Cosmos DB for PostgreSQL clusters | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-monitoring |126| Monitor multi-tenant workloads in Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-multi-tenant-monitoring |127| Performance tuning for distributed PostgreSQL workloads | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-performance-tuning |128| Optimize pgvector performance on Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-optimize-performance-pgvector |129| Understand and use Azure Cosmos DB SQL query metrics | https://learn.microsoft.com/en-us/azure/cosmos-db/query-metrics |130| Understand and optimize Request Units in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/request-units |131| Best practices for scaling Cosmos DB provisioned throughput | https://learn.microsoft.com/en-us/azure/cosmos-db/scaling-provisioned-throughput-best-practices |132| Design and use synthetic partition keys in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/synthetic-partition-keys |133| Control throughput in Cosmos DB Spark connector | https://learn.microsoft.com/en-us/azure/cosmos-db/throughput-control-spark |134| Bulk import data into Cosmos DB for NoSQL with .NET SDK | https://learn.microsoft.com/en-us/azure/cosmos-db/tutorial-dotnet-bulk-import |135| Apply background indexing best practices in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/background-indexing |136| Apply cross-region replication and DR best practices in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/cross-region-replication |137| Implement HA and cross-region replication best practices in DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/high-availability-replication-best-practices |138| Use indexing best practices for Azure DocumentDB collections | https://learn.microsoft.com/en-us/azure/documentdb/how-to-create-indexes |139| Optimize Azure DocumentDB queries using Index Advisor | https://learn.microsoft.com/en-us/azure/documentdb/index-advisor |140| Optimize performance for Azure Cassandra managed instances | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/best-practice-performance |141| Apply HA and DR best practices for Cassandra managed instances | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/resilient-applications |142| Use write-through cache to improve Cassandra managed instance performance | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/write-through-cache |143144### Decision Making145| Topic | URL |146|-------|-----|147| Choose analytics and BI options for Cosmos DB data | https://learn.microsoft.com/en-us/azure/cosmos-db/analytics-and-business-intelligence-overview |148| Apply Cosmos DB near real-time analytics to key use cases | https://learn.microsoft.com/en-us/azure/cosmos-db/analytics-and-business-intelligence-use-cases |149| Map Cassandra consistency levels to Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/consistency-mapping |150| Migrate on-premises Cassandra data to Cosmos DB Cassandra API | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/migrate-data |151| Migrate Apache Cassandra data to Cosmos DB Cassandra using Databricks | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/migrate-data-databricks |152| Live-migrate Apache Cassandra to Cosmos DB Cassandra with dual-write | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/migrate-data-dual-write-proxy |153| Choose scaling options for Cosmos DB Cassandra accounts | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/scale-account-throughput |154| Evaluate Cassandra feature support in Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/support |155| Select appropriate change feed mode for Cosmos DB workloads | https://learn.microsoft.com/en-us/azure/cosmos-db/change-feed-modes |156| Choose appropriate consistency levels in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/consistency-levels |157| Estimate Cosmos DB RU/s from existing vCores | https://learn.microsoft.com/en-us/azure/cosmos-db/convert-vcore-to-request-unit |158| Decide when to use Azure Cosmos DB dedicated gateway | https://learn.microsoft.com/en-us/azure/cosmos-db/dedicated-gateway |159| Choose and implement data migration from DynamoDB to Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/dynamodb-data-migration-cosmos-db |160| Estimate Cosmos DB RU/s and cost with capacity planner | https://learn.microsoft.com/en-us/azure/cosmos-db/estimate-ru-with-capacity-planner |161| Use Fleet Analytics to monitor Cosmos DB usage and costs | https://learn.microsoft.com/en-us/azure/cosmos-db/fleet-analytics |162| Choose between kNN and ANN for Cosmos DB vector search | https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/knn-vs-ann |163| Choose between manual and autoscale throughput in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-choose-offer |164| Migrate from .NET bulk executor to SDK v3 bulk | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-migrate-from-bulk-executor-library |165| Migrate from Java bulk executor to SDK v4 bulk | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-migrate-from-bulk-executor-library-java |166| Migrate from legacy change feed processor library to Cosmos DB .NET V3 | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-migrate-from-change-feed-library |167| Migrate from Cosmos DB Kafka connector V1 to V2 | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-migrate-from-kafka-connector-v1-to-v2 |168| Use Azure Cosmos DB integrated cache for cost and latency | https://learn.microsoft.com/en-us/azure/cosmos-db/integrated-cache |169| Plan and execute large-scale data migration to Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/migrate |170| Migrate Cosmos DB from periodic to continuous backup | https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-continuous-backup |171| Upgrade applications to Azure Cosmos DB .NET SDK v2 | https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-dotnet-v2 |172| Upgrade applications to Azure Cosmos DB .NET SDK v3 | https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-dotnet-v3 |173| Upgrade applications to Azure Cosmos DB Java SDK v4 | https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-java-v4-sdk |174| Migrate one-to-few relational data models to Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-relational-data |175| Choose between Cosmos DB for MongoDB and Atlas | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/compare-mongodb-atlas |176| Evaluate benefits of upgrading to Cosmos DB MongoDB 4.0+ | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/compression-cost-savings |177| Map MongoDB consistency to Cosmos DB levels | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/consistency-mapping |178| Estimate RU throughput and cost for Cosmos MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/estimate-ru-capacity-planner |179| Migrate from Cosmos MongoDB API to Azure DocumentDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/how-to-migrate-documentdb |180| Upgrade Cosmos DB MongoDB API version safely | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/upgrade-version |181| Use multi-region writes for high availability in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/multi-region-writes |182| Plan Cosmos DB network bandwidth usage and costs | https://learn.microsoft.com/en-us/azure/cosmos-db/network-bandwidth |183| Choose and use Cosmos DB backup modes | https://learn.microsoft.com/en-us/azure/cosmos-db/online-backup-and-restore |184| Decide when to use burstable compute | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-burstable-compute |185| Choose initial Cosmos DB for PostgreSQL cluster size | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-scale-initial |186| Select shard count for Cosmos DB for PostgreSQL tables | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-shard-count |187| Classify workloads for Cosmos DB PostgreSQL scaling | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/quickstart-build-scalable-apps-classify |188| Understand pricing and cost options for Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/resources-pricing |189| Choose and use Cosmos DB serverless accounts | https://learn.microsoft.com/en-us/azure/cosmos-db/serverless |190| Decide between Cosmos DB Table and Azure Table Storage | https://learn.microsoft.com/en-us/azure/cosmos-db/table/support |191| Decide between provisioned throughput and serverless in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/throughput-serverless |192| Choose Azure first-party services for MongoDB workloads | https://learn.microsoft.com/en-us/azure/documentdb/azure-mongo-first-party |193| Choose between Azure DocumentDB and MongoDB Atlas | https://learn.microsoft.com/en-us/azure/documentdb/compare-mongodb-atlas |194| Choose and configure high performance storage for DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/high-performance-storage |195| Assess MongoDB workloads and plan migration to Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/how-to-assess-plan-migration-readiness |196| Evaluate MongoDB compatibility across managed services including DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/managed-service-compatibility |197| Choose offline or online MongoDB migration to Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/migration-options |198| Select offline or online MongoDB migration path to Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/migration-options |199200### Architecture & Design Patterns201| Topic | URL |202|-------|-----|203| Implement AI agents and memory solutions with Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/ai-agents |204| Understand and use Cosmos DB analytical store | https://learn.microsoft.com/en-us/azure/cosmos-db/analytical-store-introduction |205| Choose Cosmos DB change feed design patterns and trade-offs | https://learn.microsoft.com/en-us/azure/cosmos-db/change-feed-design-patterns |206| Use Cosmos DB change feed for real-time e-commerce analytics | https://learn.microsoft.com/en-us/azure/cosmos-db/changefeed-ecommerce-solution |207| Design multitenant applications with Azure Cosmos DB fleets | https://learn.microsoft.com/en-us/azure/cosmos-db/fleet |208| Design agent memory patterns using Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/agentic-memories |209| Model AI knowledge graphs on Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/cosmos-ai-graph |210| Design semantic cache for LLMs using Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/semantic-cache |211| Architect multitenant generative AI apps on Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/multi-tenancy-vector-search |212| Design for AZ outage resiliency in Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-availability-zones |213| Design colocated tables in Azure Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-colocation |214| High availability and DR for Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-high-availability |215| Learn node and table types in Cosmos DB PostgreSQL clusters | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-nodes |216| Use read replicas in Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-read-replicas |217| Understand sharding models in Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-sharding-models |218| Determine application type for distributed data modeling | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-app-type |219| Choose distribution columns for Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-choose-distribution-column |220| Understand scaling concepts in Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/quickstart-build-scalable-apps-concepts |221| Model high-throughput transactional apps on Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/quickstart-build-scalable-apps-model-high-throughput |222| Model scalable multi-tenant apps on Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/quickstart-build-scalable-apps-model-multi-tenant |223| Model real-time analytics apps on Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/quickstart-build-scalable-apps-model-real-time |224| Design microservices architectures on Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/tutorial-design-database-microservices |225| Design a scalable multi-tenant database on Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/tutorial-design-database-multi-tenant |226| Design real-time dashboards on Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/tutorial-design-database-realtime |227| Implement reverse ETL patterns with Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/reverse-extract-transform-load |228| Build serverless apps with Azure Functions and Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/serverless-computing-database |229| Apply Cosmos DB social media data modeling patterns | https://learn.microsoft.com/en-us/azure/cosmos-db/social-media-apps |230| Use Synapse Link HTAP architecture with Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/synapse-link |231| Use Cosmos DB as an integrated vector database | https://learn.microsoft.com/en-us/azure/cosmos-db/vector-database |232| Use autoscale for variable workloads in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/autoscale |233| Learn Azure DocumentDB availability and DR internals | https://learn.microsoft.com/en-us/azure/documentdb/availability-disaster-recovery-under-hood |234| Understand in-region high availability design in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/high-availability |235| Design sharding strategy for Azure DocumentDB collections | https://learn.microsoft.com/en-us/azure/documentdb/partitioning |236| Design a Go-based AI agent using DocumentDB vector search | https://learn.microsoft.com/en-us/azure/documentdb/quickstart-agent-go |237| Implement RAG with Azure DocumentDB, LangChain, and OpenAI | https://learn.microsoft.com/en-us/azure/documentdb/rag |238| Design an AI advertisement generator with DocumentDB and OpenAI | https://learn.microsoft.com/en-us/azure/documentdb/tutorial-ai-advertisement-generation |239| Architect an AI travel agent with LangChain and DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/tutorial-ai-agent |240| Design dual-write Spark migration to Cassandra managed instances | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/dual-write-proxy-migration |241| Architect Spark-based migrations to Cassandra managed instances | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/spark-migration |242243### Limits & Quotas244| Topic | URL |245|-------|-----|246| Autoscale throughput limits and behaviors in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/autoscale-faq |247| Use burst capacity and understand RU limits in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/burst-capacity |248| FAQ on Cosmos DB burst capacity limits and behavior | https://learn.microsoft.com/en-us/azure/cosmos-db/burst-capacity-faq |249| Review FAQs and limits for Cosmos DB Cassandra API | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/faq |250| Azure Cosmos DB service quotas and default limits | https://learn.microsoft.com/en-us/azure/cosmos-db/concepts-limits |251| FAQ on Cosmos DB continuous backup and PITR limits | https://learn.microsoft.com/en-us/azure/cosmos-db/continuous-backup-restore-frequently-asked-questions |252| Understand limits and pricing for Cosmos DB continuous backup | https://learn.microsoft.com/en-us/azure/cosmos-db/continuous-backup-restore-introduction |253| FAQ on Cosmos DB throughput redistribution limits | https://learn.microsoft.com/en-us/azure/cosmos-db/distribute-throughput-across-partitions-faq |254| FAQ on Azure Cosmos DB fleets, fleetspaces, and accounts | https://learn.microsoft.com/en-us/azure/cosmos-db/fleet-faq |255| Use Cosmos DB lifetime free tier limits effectively | https://learn.microsoft.com/en-us/azure/cosmos-db/free-tier |256| Understand and use Cosmos DB global secondary indexes (preview) | https://learn.microsoft.com/en-us/azure/cosmos-db/global-secondary-indexes |257| Runtime limits for Cosmos DB Gremlin engine | https://learn.microsoft.com/en-us/azure/cosmos-db/gremlin/limits |258| Alert when Cosmos DB logical partitions near 20 GB limit | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-alert-on-logical-partition-key-storage-size |259| Manage Cosmos DB accounts and understand control plane limits | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-manage-database-account |260| Understand limits and behavior of Cosmos DB integrated cache | https://learn.microsoft.com/en-us/azure/cosmos-db/integrated-cache-faq |261| Request unit charges for key-value operations in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/key-value-store-cost |262| Migrate nonpartitioned Cosmos DB containers to partitioned | https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-containers-partitioned-to-nonpartitioned |263| Set periodic backup interval and retention limits | https://learn.microsoft.com/en-us/azure/cosmos-db/periodic-backup-modify-interval-retention |264| Change vCore compute quotas for Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-compute-quota |265| Cluster limits and constraints in Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/reference-limits |266| Supported PostgreSQL versions in Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/reference-versions |267| Compute and storage options for Cosmos DB for PostgreSQL clusters | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/resources-compute |268| Regional and AZ availability for Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/resources-regions |269| FAQ on Cosmos DB priority-based execution limits | https://learn.microsoft.com/en-us/azure/cosmos-db/priority-based-execution-faq |270| Serverless performance characteristics and limits in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/serverless-performance |271| FAQ for Azure Cosmos DB for Table | https://learn.microsoft.com/en-us/azure/cosmos-db/table/faq |272| FAQ on Cosmos DB throughput bucket limits and behavior | https://learn.microsoft.com/en-us/azure/cosmos-db/throughput-buckets-faq |273| Configure and use change streams in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/change-streams |274| Review MongoDB feature compatibility limits in DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/compatibility-features |275| Check MQL compatibility across MongoDB versions in DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/compatibility-query-language |276| Understand Azure DocumentDB Free Tier limits and usage | https://learn.microsoft.com/en-us/azure/documentdb/free-tier |277| Use diagnostic logs for Azure DocumentDB with tier-based availability | https://learn.microsoft.com/en-us/azure/documentdb/how-to-monitor-diagnostics-logs |278| Configure and understand indexing behavior in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/indexing |279| Reference Azure DocumentDB service limits and quotas | https://learn.microsoft.com/en-us/azure/documentdb/limitations |280| Document size and batch write limits in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/max-document-size |281| Review limits and configuration FAQs for Cassandra managed instances | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/faq |282283### Security284| Topic | URL |285|-------|-----|286| Use managed identity for Cosmos DB access to Key Vault | https://learn.microsoft.com/en-us/azure/cosmos-db/access-key-vault-managed-identity |287| Configure private endpoints for Cosmos DB analytical store | https://learn.microsoft.com/en-us/azure/cosmos-db/analytical-store-private-endpoints |288| Audit Cosmos DB control plane operations with logs | https://learn.microsoft.com/en-us/azure/cosmos-db/audit-control-plane-logs |289| Configure RBAC permissions for Cosmos DB continuous backup restore | https://learn.microsoft.com/en-us/azure/cosmos-db/continuous-backup-restore-permissions |290| Configure Cosmos DB to meet data residency requirements | https://learn.microsoft.com/en-us/azure/cosmos-db/data-residency |291| Use Microsoft Defender threat protection for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/defender-for-cosmos-db |292| Configure Dynamic Data Masking in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/dynamic-data-masking |293| Secure Azure Cosmos DB for Gremlin accounts | https://learn.microsoft.com/en-us/azure/cosmos-db/gremlin/security |294| Add and assign Cosmos DB RBAC user roles | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-add-assign-user-roles |295| Use Always Encrypted client-side encryption in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-always-encrypted |296| Configure CORS settings for Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-configure-cross-origin-resource-sharing |297| Configure IP firewall rules for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-configure-firewall |298| Secure Cosmos DB with Network Security Perimeter | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-configure-nsp |299| Configure Azure Private Link for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-configure-private-endpoints |300| Set up Cosmos DB virtual network access | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-configure-vnet-service-endpoint |301| Configure Entra ID RBAC access for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-connect-role-based-access-control |302| Rotate primary and secondary keys in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-rotate-keys |303| Configure cross-tenant CMK encryption for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-setup-cross-tenant-customer-managed-keys |304| Configure customer-managed keys with Key Vault for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-setup-customer-managed-keys |305| Enable customer-managed keys on existing Cosmos DB accounts | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-setup-customer-managed-keys-existing-accounts |306| Configure CMK for Cosmos DB with Azure Managed HSM | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-setup-customer-managed-keys-mhsm |307| Authenticate Spark to Cosmos DB with service principal | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-spark-service-principal |308| Configure RBAC for Cosmos DB for MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/how-to-setup-role-based-access-control |309| Understand RBAC roles in Cosmos DB for MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/role-based-access-control |310| Apply Azure Policy governance to Cosmos DB resources | https://learn.microsoft.com/en-us/azure/cosmos-db/policy |311| Use built-in Azure Policy definitions for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/policy-reference |312| Configure PostgreSQL and Entra ID authentication | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-authentication |313| Use customer-managed keys with Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-customer-managed-keys |314| Configure public network access for Cosmos DB PostgreSQL | https://learn.microso315316…(truncated)
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