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 APIs, change feed, vector search, global distribution, or HTAP/analytics 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 Database for MySQL (use azure-database-mysql), Azure Database for PostgreSQL (use azure-database-postgresql).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**: Use the **Category Index** below to locate relevant sections. For categories with line ranges (e.g., `L35-L120`), use `read_file` with the specified lines. For categories with file links (e.g., `[security.md](security.md)`), use `read_file` on the linked reference file1213> **IMPORTANT for Agent**: If `metadata.generated_at` is more than 3 months old, suggest the user pull the latest version from the repository. If `mcp_microsoftdocs` tools are not available, suggest the user install it: [Installation Guide](https://github.com/MicrosoftDocs/mcp/blob/main/README.md)1415This skill requires **network access** to fetch documentation content:16- **Preferred**: Use `mcp_microsoftdocs:microsoft_docs_fetch` with query string `from=learn-agent-skill`. Returns Markdown.17- **Fallback**: Use `fetch_webpage` with query string `from=learn-agent-skill&accept=text/markdown`. Returns Markdown.1819## Category Index2021| Category | Location | Description |22|----------|----------|-------------|23| Troubleshooting | L37-L91 | Diagnosing and fixing Cosmos DB issues: SDK errors, timeouts, 4xx/5xx codes, performance/RU analysis, metrics/log queries, CMK/backup problems, and API-specific (Mongo/Cassandra/Gremlin/Postgres) troubleshooting. |24| Best Practices | L92-L151 | Performance, scaling, cost, and resiliency best practices for Cosmos DB (all APIs/SDKs), including partitioning, indexing, throughput, benchmarking, DR, and tuning PostgreSQL/Cassandra workloads |25| Decision Making | L152-L206 | Guides for choosing Cosmos DB options (consistency, throughput, backup, analytics, vector search), estimating RU/costs, and planning/migrating workloads across APIs (Cassandra, MongoDB, PostgreSQL, DynamoDB). |26| Architecture & Design Patterns | L207-L249 | 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. |27| Limits & Quotas | L250-L294 | Limits, quotas, and behaviors for Cosmos DB and DocumentDB: RU/throughput, autoscale, burst, backups, partitions, indexing, APIs (Core, Cassandra, Mongo, Table, Gremlin), and PostgreSQL cluster sizing. |28| Security | L295-L361 | Securing Cosmos DB and related services: identity/RBAC, keys and encryption, network isolation (VNet, Private Link, firewalls), TLS, auditing, policies, and data‑level protections. |29| Configuration | L362-L485 | Configuring Cosmos DB and related services: throughput, indexing, TTL, backup/restore, global distribution, monitoring, emulators, SDK tuning, and deployment via Bicep/ARM/Terraform across all APIs. |30| Integrations & Coding Patterns | [integrations.md](integrations.md) | SDK patterns, bulk ops, change feed, vector search, and integrations (Kafka, Spark, Functions, BI, AI agents) for Cosmos DB APIs (NoSQL, Mongo, Cassandra, PostgreSQL, Gremlin, DocumentDB). |31| Deployment | [deployment.md](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. |3233### Troubleshooting34| Topic | URL |35|-------|-----|36| Run diagnostic log queries for Cosmos DB Cassandra | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/diagnostic-queries |37| Use Log Analytics to diagnose Cosmos DB Cassandra server errors | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/error-codes-solution |38| FAQ and troubleshooting for Cassandra API materialized views | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/materialized-views-faq |39| Troubleshoot common Cosmos DB Cassandra API errors | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/troubleshoot-common-issues |40| Resolve NoHostAvailableException and NoNodeAvailableException in Cosmos DB Cassandra | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/troubleshoot-nohostavailable-exception |41| Troubleshoot revoked-state Cosmos DB CMK accounts | https://learn.microsoft.com/en-us/azure/cosmos-db/cmk-troubleshooting-guide |42| Use advanced diagnostics queries to troubleshoot Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/diagnostic-queries |43| Query diagnostics logs for Cosmos DB Gremlin issues | https://learn.microsoft.com/en-us/azure/cosmos-db/gremlin/diagnostic-queries |44| Use diagnostics queries to troubleshoot Cosmos DB MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/diagnostic-queries |45| Troubleshoot common Cosmos DB MongoDB errors | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/error-codes-solutions |46| Prevent rate-limiting errors in Cosmos DB MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/prevent-rate-limiting-errors |47| Troubleshoot query performance in Cosmos DB MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/troubleshoot-query-performance |48| Monitor and diagnose Cosmos DB elastic partition operations | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-activity-logs-elastic-operations |49| Troubleshoot with aggregated diagnostics logs for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-aggregated-logs |50| Write basic diagnostics queries to troubleshoot Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-logs-basic-queries |51| Monitor normalized request units for workload analysis | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-normalized-request-units |52| Analyze request unit consumption for Cosmos DB operations | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-request-unit-usage |53| Diagnose server-side latency with Cosmos DB metrics | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-server-side-latency |54| Resolve common issues with Cosmos DB partial document updates | https://learn.microsoft.com/en-us/azure/cosmos-db/partial-document-update-faq |55| Determine true distributed table size in Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-table-size |56| Troubleshoot connection issues to Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-troubleshoot-common-connection-issues |57| Resolve read-only state in Cosmos DB for PostgreSQL clusters | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-troubleshoot-read-only |58| Run diagnostic queries for distributed clusters | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-useful-diagnostic-queries |59| 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 |60| Use Azure SRE Agent to diagnose Cosmos DB issues | https://learn.microsoft.com/en-us/azure/cosmos-db/site-reliability-engineering-agent |61| Fix Cosmos DB 400 bad request and partition key errors | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-bad-request |62| Troubleshoot Azure Functions triggers for Cosmos DB change feed | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-changefeed-functions |63| Troubleshoot cross-tenant CMK issues in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-cmk |64| Troubleshoot Cosmos DB 409 conflict exceptions | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-conflict |65| Troubleshoot Azure Cosmos DB .NET SDK issues | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-dotnet-sdk |66| 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 |67| Fix HTTP 408 timeouts in Cosmos DB .NET SDK | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-dotnet-sdk-request-time-out |68| Troubleshoot slow requests in Cosmos DB .NET SDK | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-dotnet-sdk-slow-request |69| Troubleshoot Cosmos DB 403 forbidden exceptions | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-forbidden |70| Diagnose and troubleshoot Cosmos DB async Java SDK v2 | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-java-async-sdk |71| 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 |72| Resolve service unavailable errors in Cosmos DB Java v4 SDK | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-java-sdk-service-unavailable |73| Diagnose and troubleshoot Cosmos DB Java SDK v4 issues | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-java-sdk-v4 |74| Troubleshoot Cosmos DB 404 not found exceptions | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-not-found |75| Diagnose and troubleshoot Cosmos DB Python SDK issues | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-python-sdk |76| Troubleshoot Azure Cosmos DB query performance issues | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-query-performance |77| Resolve Cosmos DB 429 request rate too large errors | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-request-rate-too-large |78| Fix Azure Cosmos DB HTTP 408 request timeouts | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-request-time-out |79| Diagnose Cosmos DB SDK availability in multi-region setups | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-sdk-availability |80| Resolve Cosmos DB service unavailable (503) exceptions | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-service-unavailable |81| Resolve Cosmos DB unauthorized (401) exceptions | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-unauthorized |82| Use Cosmos DB metrics and insights to debug issues | https://learn.microsoft.com/en-us/azure/cosmos-db/use-metrics |83| Resolve common Azure DocumentDB questions and issues | https://learn.microsoft.com/en-us/azure/documentdb/faq |84| Troubleshoot CMK encryption issues in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/how-to-database-encryption-troubleshoot |85| Troubleshoot common Azure DocumentDB errors and issues | https://learn.microsoft.com/en-us/azure/documentdb/troubleshoot-common-issues |86| Troubleshoot Azure DocumentDB replication connectivity and performance | https://learn.microsoft.com/en-us/azure/documentdb/troubleshoot-replication |8788### Best Practices89| Topic | URL |90|-------|-----|91| Apply automated performance and cost recommendations in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/automated-recommendations |92| Benchmark Azure Cosmos DB for NoSQL with YCSB | https://learn.microsoft.com/en-us/azure/cosmos-db/benchmarking-framework |93| Best practices for Azure Cosmos DB .NET SDK v3 | https://learn.microsoft.com/en-us/azure/cosmos-db/best-practice-dotnet |94| Best practices for Azure Cosmos DB Java SDK v4 | https://learn.microsoft.com/en-us/azure/cosmos-db/best-practice-java |95| Optimize Azure Cosmos DB Python SDK performance | https://learn.microsoft.com/en-us/azure/cosmos-db/best-practice-python |96| Apply performance best practices for Cosmos DB JavaScript SDK | https://learn.microsoft.com/en-us/azure/cosmos-db/best-practices-javascript |97| Adapt Apache Cassandra applications to Cosmos DB Cassandra API | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/adoption |98| Apply recommended Cosmos DB Cassandra driver extension settings | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/driver-extensions |99| Implement lightweight transactions in Cosmos DB Cassandra API | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/lightweight-transactions |100| Use materialized views in Cosmos DB Cassandra API (preview) | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/materialized-views |101| 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 |102| Use secondary indexing in Cosmos DB Cassandra API | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/secondary-indexing |103| Design resilient Cosmos DB SDK client applications | https://learn.microsoft.com/en-us/azure/cosmos-db/conceptual-resilient-sdk-applications |104| Configure conflict resolution policies for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/conflict-resolution-policies |105| Choose an IoT partition key strategy for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/design-partitioning-iot |106| Plan Cosmos DB disaster recovery and failover | https://learn.microsoft.com/en-us/azure/cosmos-db/disaster-recovery-guidance |107| Apply Cosmos DB best practices via Agent Kit | https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/agent-kit |108| 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 |109| Use hierarchical partition keys in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/hierarchical-partition-keys |110| Redistribute Cosmos DB throughput across partitions | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-redistribute-throughput-across-partitions |111| Use Cosmos DB indexing metrics to tune performance | https://learn.microsoft.com/en-us/azure/cosmos-db/index-metrics |112| Handle large partition keys and avoid collisions in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/large-partition-keys |113| Model and partition Cosmos DB data with a real example | https://learn.microsoft.com/en-us/azure/cosmos-db/model-partition-example |114| Redistribute throughput across Cosmos MongoDB partitions | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/distribute-throughput-across-partitions |115| Optimize indexing for Cosmos DB for MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/indexing |116| Optimize write performance in Cosmos DB MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/optimize-write-performance |117| Optimize Azure Cosmos DB MongoDB after migration | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/post-migration-optimization |118| Prepare MongoDB workloads for Cosmos DB migration | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/pre-migration-steps |119| Use MongoDB read preference with Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/readpreference-global-distribution |120| Optimize Azure Cosmos DB costs for dev and production | https://learn.microsoft.com/en-us/azure/cosmos-db/optimize-costs |121| Apply partitioning and scaling best practices in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/partitioning |122| Improve performance with Cosmos DB .NET SDK v2 | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips |123| Performance tips for Cosmos DB Async Java SDK v2 | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-async-java |124| Improve performance with Cosmos DB .NET SDK v3 | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-dotnet-sdk-v3 |125| Performance tips for Cosmos DB Sync Java SDK v2 | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-java |126| Improve performance with Cosmos DB Java SDK v4 | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-java-sdk-v4 |127| Optimize Azure Cosmos DB Python SDK performance | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-python-sdk |128| Optimize query performance with Cosmos DB SDKs | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-query-sdk |129| Monitor and tune Cosmos DB for PostgreSQL clusters | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-monitoring |130| Monitor multi-tenant workloads in Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-multi-tenant-monitoring |131| Performance tuning for distributed PostgreSQL workloads | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-performance-tuning |132| Optimize pgvector performance on Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-optimize-performance-pgvector |133| Understand and use Azure Cosmos DB SQL query metrics | https://learn.microsoft.com/en-us/azure/cosmos-db/query-metrics |134| Understand and optimize Request Units in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/request-units |135| Best practices for scaling Cosmos DB provisioned throughput | https://learn.microsoft.com/en-us/azure/cosmos-db/scaling-provisioned-throughput-best-practices |136| Design and use synthetic partition keys in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/synthetic-partition-keys |137| Control throughput in Cosmos DB Spark connector | https://learn.microsoft.com/en-us/azure/cosmos-db/throughput-control-spark |138| Bulk import data into Cosmos DB for NoSQL with .NET SDK | https://learn.microsoft.com/en-us/azure/cosmos-db/tutorial-dotnet-bulk-import |139| Apply background indexing best practices in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/background-indexing |140| Apply cross-region replication and DR best practices in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/cross-region-replication |141| Implement HA and cross-region replication best practices in DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/high-availability-replication-best-practices |142| Use indexing best practices for Azure DocumentDB collections | https://learn.microsoft.com/en-us/azure/documentdb/how-to-create-indexes |143| Optimize Azure DocumentDB queries using Index Advisor | https://learn.microsoft.com/en-us/azure/documentdb/index-advisor |144| Optimize performance for Azure Cassandra managed instances | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/best-practice-performance |145| Apply HA and DR best practices for Cassandra managed instances | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/resilient-applications |146| Use write-through cache to improve Cassandra managed instance performance | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/write-through-cache |147148### Decision Making149| Topic | URL |150|-------|-----|151| Choose analytics and BI options for Cosmos DB data | https://learn.microsoft.com/en-us/azure/cosmos-db/analytics-and-business-intelligence-overview |152| 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 |153| Map Cassandra consistency levels to Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/consistency-mapping |154| Migrate on-premises Cassandra data to Cosmos DB Cassandra API | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/migrate-data |155| Migrate Apache Cassandra data to Cosmos DB Cassandra using Databricks | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/migrate-data-databricks |156| 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 |157| Choose scaling options for Cosmos DB Cassandra accounts | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/scale-account-throughput |158| Select appropriate change feed mode for Cosmos DB workloads | https://learn.microsoft.com/en-us/azure/cosmos-db/change-feed-modes |159| Choose appropriate consistency levels in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/consistency-levels |160| Estimate Cosmos DB RU/s from existing vCores | https://learn.microsoft.com/en-us/azure/cosmos-db/convert-vcore-to-request-unit |161| Decide when to use Azure Cosmos DB dedicated gateway | https://learn.microsoft.com/en-us/azure/cosmos-db/dedicated-gateway |162| Choose and implement data migration from DynamoDB to Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/dynamodb-data-migration-cosmos-db |163| Estimate Cosmos DB RU/s and cost with capacity planner | https://learn.microsoft.com/en-us/azure/cosmos-db/estimate-ru-with-capacity-planner |164| Use Fleet Analytics to monitor Cosmos DB usage and costs | https://learn.microsoft.com/en-us/azure/cosmos-db/fleet-analytics |165| Choose between kNN and ANN for Cosmos DB vector search | https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/knn-vs-ann |166| Choose between manual and autoscale throughput in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-choose-offer |167| 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 |168| 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 |169| 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 |170| 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 |171| Use Azure Cosmos DB integrated cache for cost and latency | https://learn.microsoft.com/en-us/azure/cosmos-db/integrated-cache |172| Plan and execute large-scale data migration to Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/migrate |173| Migrate Cosmos DB from periodic to continuous backup | https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-continuous-backup |174| Upgrade applications to Azure Cosmos DB .NET SDK v2 | https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-dotnet-v2 |175| Upgrade applications to Azure Cosmos DB .NET SDK v3 | https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-dotnet-v3 |176| Upgrade applications to Azure Cosmos DB Java SDK v4 | https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-java-v4-sdk |177| Migrate one-to-few relational data models to Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-relational-data |178| Choose between Cosmos DB for MongoDB and Atlas | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/compare-mongodb-atlas |179| Evaluate benefits of upgrading to Cosmos DB MongoDB 4.0+ | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/compression-cost-savings |180| Map MongoDB consistency to Cosmos DB levels | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/consistency-mapping |181| Estimate RU throughput and cost for Cosmos MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/estimate-ru-capacity-planner |182| Migrate from Cosmos MongoDB API to Azure DocumentDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/how-to-migrate-documentdb |183| Upgrade Cosmos DB MongoDB API version safely | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/upgrade-version |184| Use multi-region writes for high availability in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/multi-region-writes |185| Plan Cosmos DB network bandwidth usage and costs | https://learn.microsoft.com/en-us/azure/cosmos-db/network-bandwidth |186| Choose and use Cosmos DB backup modes | https://learn.microsoft.com/en-us/azure/cosmos-db/online-backup-and-restore |187| Decide when to use burstable compute | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-burstable-compute |188| Choose initial Cosmos DB for PostgreSQL cluster size | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-scale-initial |189| Select shard count for Cosmos DB for PostgreSQL tables | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-shard-count |190| Decide and plan migration to PostgreSQL Elastic Cluster | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/migrate-postgresql-elastic-cluster |191| Classify workloads for Cosmos DB PostgreSQL scaling | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/quickstart-build-scalable-apps-classify |192| Understand pricing and cost options for Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/resources-pricing |193| Choose and use Cosmos DB serverless accounts | https://learn.microsoft.com/en-us/azure/cosmos-db/serverless |194| Decide between Cosmos DB Table and Azure Table Storage | https://learn.microsoft.com/en-us/azure/cosmos-db/table/support |195| Decide between provisioned throughput and serverless in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/throughput-serverless |196| Choose Azure first-party services for MongoDB workloads | https://learn.microsoft.com/en-us/azure/documentdb/azure-mongo-first-party |197| Choose between Azure DocumentDB and MongoDB Atlas | https://learn.microsoft.com/en-us/azure/documentdb/compare-mongodb-atlas |198| Assess MongoDB workloads and plan migration to Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/how-to-assess-plan-migration-readiness |199| Evaluate MongoDB compatibility across managed services including DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/managed-service-compatibility |200| Choose and plan MongoDB to DocumentDB migration | https://learn.microsoft.com/en-us/azure/documentdb/migration-options |201| Choose and plan MongoDB to DocumentDB migration | https://learn.microsoft.com/en-us/azure/documentdb/migration-options |202203### Architecture & Design Patterns204| Topic | URL |205|-------|-----|206| Implement AI agents and memory solutions with Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/ai-agents |207| Understand and use Cosmos DB analytical store | https://learn.microsoft.com/en-us/azure/cosmos-db/analytical-store-introduction |208| Choose Cosmos DB change feed design patterns and trade-offs | https://learn.microsoft.com/en-us/azure/cosmos-db/change-feed-design-patterns |209| Use Cosmos DB change feed for real-time e-commerce analytics | https://learn.microsoft.com/en-us/azure/cosmos-db/changefeed-ecommerce-solution |210| Design multitenant applications with Azure Cosmos DB fleets | https://learn.microsoft.com/en-us/azure/cosmos-db/fleet |211| Design agent memory patterns using Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/agentic-memories |212| Model AI knowledge graphs on Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/cosmos-ai-graph |213| Design semantic cache for LLMs using Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/semantic-cache |214| Architect multitenant generative AI apps on Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/multi-tenancy-vector-search |215| Design for AZ outage resiliency in Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-availability-zones |216| Design colocated tables in Azure Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-colocation |217| High availability and DR for Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-high-availability |218| Learn node and table types in Cosmos DB PostgreSQL clusters | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-nodes |219| Use read replicas in Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-read-replicas |220| Understand sharding models in Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-sharding-models |221| Determine application type for distributed data modeling | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-app-type |222| Choose distribution columns for Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-choose-distribution-column |223| Understand scaling concepts in Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/quickstart-build-scalable-apps-concepts |224| 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 |225| 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 |226| 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 |227| Design microservices architectures on Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/tutorial-design-database-microservices |228| 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 |229| Design real-time dashboards on Cosmos DB PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/tutorial-design-database-realtime |230| Implement reverse ETL patterns with Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/reverse-extract-transform-load |231| Build serverless apps with Azure Functions and Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/serverless-computing-database |232| Apply Cosmos DB social media data modeling patterns | https://learn.microsoft.com/en-us/azure/cosmos-db/social-media-apps |233| Use Synapse Link HTAP architecture with Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/synapse-link |234| Use Cosmos DB as an integrated vector database | https://learn.microsoft.com/en-us/azure/cosmos-db/vector-database |235| Use autoscale for variable workloads in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/autoscale |236| Learn Azure DocumentDB availability and DR internals | https://learn.microsoft.com/en-us/azure/documentdb/availability-disaster-recovery-under-hood |237| Understand in-region high availability design in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/high-availability |238| Design sharding strategy for Azure DocumentDB collections | https://learn.microsoft.com/en-us/azure/documentdb/partitioning |239| Design a Go-based AI agent using DocumentDB vector search | https://learn.microsoft.com/en-us/azure/documentdb/quickstart-agent-go |240| Implement RAG with Azure DocumentDB, LangChain, and OpenAI | https://learn.microsoft.com/en-us/azure/documentdb/rag |241| Design an AI advertisement generator with DocumentDB and OpenAI | https://learn.microsoft.com/en-us/azure/documentdb/tutorial-ai-advertisement-generation |242| Architect an AI travel agent with LangChain and DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/tutorial-ai-agent |243| Design dual-write Spark migration to Cassandra managed instances | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/dual-write-proxy-migration |244| Architect Spark-based migrations to Cassandra managed instances | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/spark-migration |245246### Limits & Quotas247| Topic | URL |248|-------|-----|249| Autoscale throughput limits and behaviors in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/autoscale-faq |250| Use burst capacity and understand RU limits in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/burst-capacity |251| FAQ on Cosmos DB burst capacity limits and behavior | https://learn.microsoft.com/en-us/azure/cosmos-db/burst-capacity-faq |252| Review FAQs and limits for Cosmos DB Cassandra API | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/faq |253| Azure Cosmos DB service quotas and default limits | https://learn.microsoft.com/en-us/azure/cosmos-db/concepts-limits |254| FAQ on Cosmos DB continuous backup and PITR limits | https://learn.microsoft.com/en-us/azure/cosmos-db/continuous-backup-restore-frequently-asked-questions |255| Understand limits and pricing for Cosmos DB continuous backup | https://learn.microsoft.com/en-us/azure/cosmos-db/continuous-backup-restore-introduction |256| FAQ on Cosmos DB throughput redistribution limits | https://learn.microsoft.com/en-us/azure/cosmos-db/distribute-throughput-across-partitions-faq |257| FAQ on Azure Cosmos DB fleets, fleetspaces, and accounts | https://learn.microsoft.com/en-us/azure/cosmos-db/fleet-faq |258| Use Cosmos DB lifetime free tier limits effectively | https://learn.microsoft.com/en-us/azure/cosmos-db/free-tier |259| Understand and use Cosmos DB global secondary indexes (preview) | https://learn.microsoft.com/en-us/azure/cosmos-db/global-secondary-indexes |260| Runtime limits for Cosmos DB Gremlin engine | https://learn.microsoft.com/en-us/azure/cosmos-db/gremlin/limits |261| Use hierarchical partition keys to bypass 20-GB limit | https://learn.microsoft.com/en-us/azure/cosmos-db/hierarchical-partition-keys-unlimited-scale |262| 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 |263| Manage Cosmos DB accounts and understand control plane limits | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-manage-database-account |264| Understand limits and behavior of Cosmos DB integrated cache | https://learn.microsoft.com/en-us/azure/cosmos-db/integrated-cache-faq |265| Request unit charges for key-value operations in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/key-value-store-cost |266| Migrate nonpartitioned Cosmos DB containers to partitioned | https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-containers-partitioned-to-nonpartitioned |267| Set periodic backup interval and retention limits | https://learn.microsoft.com/en-us/azure/cosmos-db/periodic-backup-modify-interval-retention |268| Change vCore compute quotas for Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-compute-quota |269| Cluster limits and constraints in Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/reference-limits |270| Supported PostgreSQL versions in Azure Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/reference-versions |271| Compute and storage options for Cosmos DB for PostgreSQL clusters | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/resources-compute |272| Regional and AZ availability for Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/resources-regions |273| FAQ on Cosmos DB priority-based execution limits | https://learn.microsoft.com/en-us/azure/cosmos-db/priority-based-execution-faq |274| Serverless performance characteristics and limits in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/serverless-performance |275| FAQ for Azure Cosmos DB for Table | https://learn.microsoft.com/en-us/azure/cosmos-db/table/faq |276| Configure and manage Azure Cosmos DB throughput buckets | https://learn.microsoft.com/en-us/azure/cosmos-db/throughput-buckets |277| FAQ on Cosmos DB throughput bucket limits and behavior | https://learn.microsoft.com/en-us/azure/cosmos-db/throughput-buckets-faq |278| Configure and use change streams in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/change-streams |279| Review MongoDB feature compatibility limits in DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/compatibility-features |280| Check MQL compatibility across MongoDB versions in DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/compatibility-query-language |281| Understand compute and storage sizing for Azure DocumentDB clusters | https://learn.microsoft.com/en-us/azure/documentdb/compute-storage |282| Understand compute and storage sizing for Azure DocumentDB clusters | https://learn.microsoft.com/en-us/azure/documentdb/compute-storage |283| Understand Azure DocumentDB Free Tier limits and usage | https://learn.microsoft.com/en-us/azure/documentdb/free-tier |284| Configure Premium SSD v2 performance limits for Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/high-performance-storage |285| Use diagnostic logs for Azure DocumentDB with tier-based availability | https://learn.microsoft.com/en-us/azure/documentdb/how-to-monitor-diagnostics-logs |286| Configure and understand indexing behavior in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/indexing |287| Reference Azure DocumentDB service limits and quotas | https://learn.microsoft.com/en-us/azure/documentdb/limitations |288| Document size and batch write limits in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/max-document-size |289| Review limits and configuration FAQs for Cassandra managed instances | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/faq |290291### Security292| Topic | URL |293|-------|-----|294| Use managed identity for Cosmos DB access to Key Vault | https://learn.microsoft.com/en-us/azure/cosmos-db/access-key-vault-managed-identity |295| Configure private endpoints for Cosmos DB analytical store | https://learn.microsoft.com/en-us/azure/cosmos-db/analytical-store-private-endpoints |296| Audit Cosmos DB control plane operations with logs | https://learn.microsoft.com/en-us/azure/cosmos-db/audit-control-plane-logs |297| Configure RBAC permissions for Cosmos DB continuous backup restore | https://learn.microsoft.com/en-us/azure/cosmos-db/continuous-backup-restore-permissions |298| Configure Cosmos DB to meet data residency requirements | https://learn.microsoft.com/en-us/azure/cosmos-db/data-residency |299| Use Microsoft Defender threat protection for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/defender-for-cosmos-db |300| Configure Dynamic Data Masking in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/dynamic-data-masking |301| Secure Azure Cosmos DB for Gremlin accounts | https://learn.microsoft.com/en-us/azure/cosmos-db/gremlin/security |302| Add and assign Cosmos DB RBAC user roles | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-add-assign-user-roles |303| Use Always Encrypted client-side encryption in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-always-encrypted |304| Configure CORS settings for Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-configure-cross-origin-resource-sharing |305| Configure IP firewall rules for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-configure-firewall |306| Secure Cosmos DB with Network Security Perimeter | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-configure-nsp |307| Configure Azure Private Link for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-configure-private-endpoints |308| Set up Cosmos DB virtual network access | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-configure-vnet-service-endpoint |309| Configure Entra ID RBAC access for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-connect-role-based-access-control |310| Rotate primary and secondary keys in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-rotate-keys |311| 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 |312| 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 |313| 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 |314| Configure CMK 315316…(truncated)
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