1---2name: azure-cosmos-db-33description: 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 building Cosmos DB NoSQL/Mongo/Cassandra apps, using change feed, multi-region, vector search, or AI/RAG, 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 Data Explorer (use azure-data-explorer). 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**: 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-L90 | Diagnosing and fixing Cosmos DB issues across APIs (Cassandra, Gremlin, MongoDB, PostgreSQL, SQL), including errors, timeouts, performance, encryption/CMK, connectivity, and SDK/client problems. |24| Best Practices | L91-L154 | Best practices for performance, cost, partitioning, indexing, consistency, SDK usage, change feed, DR/HA, and workload tuning across Cosmos DB APIs (NoSQL, Mongo, Cassandra, PostgreSQL, DocumentDB). |25| Decision Making | L155-L216 | Guidance on choosing Cosmos/DocumentDB/PostgreSQL options (consistency, throughput, regions, pricing), and planning migrations, upgrades, scaling, analytics, and backup/restore strategies. |26| Architecture & Design Patterns | L217-L249 | Architectural patterns for AI/RAG, agent memory, knowledge graphs, multi-tenant and microservice designs, high availability, change feed, analytics, and vector search on Cosmos DB and PostgreSQL. |27| Limits & Quotas | L250-L291 | Limits, quotas, and behaviors for Cosmos DB (and DocumentDB): throughput, autoscale, burst capacity, partitions, backups/restore, serverless, indexing, free tier, and PostgreSQL/Cassandra limits. |28| Security | L292-L363 | Securing Cosmos DB across all APIs: identity/RBAC, network isolation (firewall, Private Link, vnets), encryption/CMK, auditing, data masking, TLS, governance/Policy, and Defender integration. |29| Configuration | L364-L496 | Configuring Cosmos DB and related services: throughput, indexing, backup/restore, monitoring, emulators, vector/search, multi-region, Cassandra/Mongo/PostgreSQL/Table APIs, and SDK performance/observability. |30| Integrations & Coding Patterns | [integrations.md](integrations.md) | SDK patterns, bulk ops, change feed, Kafka/Spark/BI integrations, vector search, RAG/AI patterns, and language-specific samples for Cosmos DB (NoSQL, Mongo, Cassandra, PostgreSQL, Gremlin). |31| Deployment | [deployment.md](deployment.md) | Deploying and managing Cosmos DB (NoSQL, Mongo, Cassandra, PostgreSQL, Table, DocumentDB) with Bicep/ARM/Terraform, CI/CD, emulator, migrations, upgrades, and maintenance. |3233### Troubleshooting34| Topic | URL |35|-------|-----|36| Run advanced diagnostics queries for Cosmos DB Cassandra | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/diagnostic-queries |37| Use Log Analytics for Cosmos DB Cassandra error codes | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/error-codes-solution |38| Resolve issues with Cassandra materialized views in Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/materialized-views-faq |39| Resolve common Cosmos DB Cassandra API errors | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/troubleshoot-common-issues |40| Fix NoHostAvailable and NoNodeAvailable 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| Troubleshoot Cosmos DB with advanced diagnostics log queries | https://learn.microsoft.com/en-us/azure/cosmos-db/diagnostic-queries |43| Run advanced diagnostics queries for Cosmos DB Gremlin | https://learn.microsoft.com/en-us/azure/cosmos-db/gremlin/diagnostic-queries |44| Troubleshoot common questions for Azure Cosmos DB Gremlin API | https://learn.microsoft.com/en-us/azure/cosmos-db/gremlin/faq |45| Interpret Cosmos DB Gremlin response headers for debugging | https://learn.microsoft.com/en-us/azure/cosmos-db/gremlin/headers |46| Use diagnostics queries to troubleshoot Cosmos DB MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/diagnostic-queries |47| Resolve common Azure Cosmos DB MongoDB error codes | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/error-codes-solutions |48| Resolve common Azure Cosmos DB for MongoDB issues | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/faq |49| Prevent rate-limiting errors in Cosmos DB MongoDB operations | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/prevent-rate-limiting-errors |50| Troubleshoot query performance issues in Cosmos DB MongoDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/troubleshoot-query-performance |51| Use aggregated diagnostics logs to troubleshoot Cosmos DB requests | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-aggregated-logs |52| Troubleshoot Cosmos DB with basic diagnostics KQL queries | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-logs-basic-queries |53| Monitor normalized request units to diagnose Cosmos DB load | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-normalized-request-units |54| Analyze Cosmos DB request unit usage for operations | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-request-unit-usage |55| Monitor and troubleshoot Cosmos DB server-side latency | https://learn.microsoft.com/en-us/azure/cosmos-db/monitor-server-side-latency |56| Troubleshoot connection issues to Azure Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-troubleshoot-common-connection-issues |57| Diagnose and fix read-only Azure Cosmos DB for PostgreSQL clusters | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-troubleshoot-read-only |58| Run useful diagnostic queries on Cosmos DB for PostgreSQL clusters | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-useful-diagnostic-queries |59| Troubleshoot Azure Cosmos DB Shell installation and usage issues | https://learn.microsoft.com/en-us/azure/cosmos-db/shell/troubleshooting |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 trigger for Azure Cosmos DB | 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| Resolve 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 SDK request header too large (400) errors | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-dotnet-sdk-request-header-too-large |67| Troubleshoot HTTP 408 timeouts in Cosmos DB .NET SDK | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-dotnet-sdk-request-time-out |68| Diagnose and fix 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| Troubleshoot 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| Fix service unavailable errors in Cosmos DB Java v4 SDK | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-java-sdk-service-unavailable |73| Troubleshoot Azure 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 SQL query performance issues | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-query-performance |77| Troubleshoot Azure Cosmos DB 429 request rate errors | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-request-rate-too-large |78| Resolve Azure Cosmos DB HTTP 408 request timeout errors | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-request-time-out |79| Diagnose SDK availability and failover in multi-region Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-sdk-availability |80| Troubleshoot Cosmos DB service unavailable connectivity errors | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-service-unavailable |81| Troubleshoot Cosmos DB 401 unauthorized access errors | https://learn.microsoft.com/en-us/azure/cosmos-db/troubleshoot-unauthorized |82| Use Cosmos DB metrics and insights to debug common issues | https://learn.microsoft.com/en-us/azure/cosmos-db/use-metrics |83| Troubleshoot CMK-based encryption issues in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/how-to-database-encryption-troubleshoot |84| Diagnose and fix common Azure DocumentDB errors | https://learn.microsoft.com/en-us/azure/documentdb/troubleshoot-common-issues |85| Troubleshoot Azure DocumentDB replication issues | https://learn.microsoft.com/en-us/azure/documentdb/troubleshoot-replication |8687### Best Practices88| Topic | URL |89|-------|-----|90| Apply automated performance, cost, and security recommendations in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/automated-recommendations |91| Benchmark Cosmos DB for NoSQL with YCSB | https://learn.microsoft.com/en-us/azure/cosmos-db/benchmarking-framework |92| Follow best practices for Cosmos DB .NET SDK v3 | https://learn.microsoft.com/en-us/azure/cosmos-db/best-practice-dotnet |93| Apply Java v4 Cosmos DB SDK best practices | https://learn.microsoft.com/en-us/azure/cosmos-db/best-practice-java |94| Use Python Cosmos DB SDK with best practices | https://learn.microsoft.com/en-us/azure/cosmos-db/best-practice-python |95| Apply JavaScript Cosmos DB SDK best practices | https://learn.microsoft.com/en-us/azure/cosmos-db/best-practices-javascript |96| Adapt Apache Cassandra apps to Cosmos DB Cassandra | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/adoption |97| Consume change feed from Cosmos DB Cassandra | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/change-feed |98| Map Cassandra consistency levels to Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/consistency-mapping |99| Configure Cosmos DB Cassandra extension driver settings | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/driver-extensions |100| Measure RU charges for Cosmos DB Cassandra queries | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/find-request-unit-charge |101| Use lightweight transactions in Cosmos DB Cassandra | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/lightweight-transactions |102| Use materialized views (preview) in Cosmos DB Cassandra | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/materialized-views |103| Design partitions for Cosmos DB Cassandra workloads | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/partitioning |104| Avoid rate limiting with server-side retry in Cosmos DB Cassandra | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/prevent-rate-limiting-errors |105| Use secondary indexing in Cosmos DB Cassandra | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/secondary-indexing |106| Use tokens and token() with Cosmos DB Cassandra | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/tokens |107| Implement and consume Azure Cosmos DB change feed | https://learn.microsoft.com/en-us/azure/cosmos-db/change-feed |108| Design resilient Cosmos DB SDK client applications | https://learn.microsoft.com/en-us/azure/cosmos-db/conceptual-resilient-sdk-applications |109| Understand Cosmos DB conflict types and policies | https://learn.microsoft.com/en-us/azure/cosmos-db/conflict-resolution-policies |110| Choose IoT partition keys for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/design-partitioning-iot |111| Apply disaster recovery strategies for Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/disaster-recovery-guidance |112| Optimize vector indexing and search in Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/vector-search-performance-tips |113| Apply Cosmos DB best practices with GitHub Copilot in VS Code | https://learn.microsoft.com/en-us/azure/cosmos-db/github-copilot-visual-studio-code-best-practices |114| Use hierarchical partition keys for scalable Cosmos DB data | https://learn.microsoft.com/en-us/azure/cosmos-db/hierarchical-partition-keys |115| Enable autoscale throughput for Cosmos DB resources | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-provision-autoscale-throughput |116| Use shared database throughput safely in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-provision-database-throughput |117| Monitor Azure Cosmos DB change feed processor progress | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-use-change-feed-estimator |118| Merge Cosmos DB partitions to reduce fragmentation | https://learn.microsoft.com/en-us/azure/cosmos-db/merge |119| Model and partition real-world data in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/model-partition-example |120| Redistribute throughput across Cosmos DB MongoDB partitions | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/distribute-throughput-across-partitions |121| Optimize Cosmos DB for MongoDB indexing configuration | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/indexing |122| Optimize write performance for Cosmos DB MongoDB workloads | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/optimize-write-performance |123| Optimize Cosmos DB MongoDB workloads after migration | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/post-migration-optimization |124| Use MongoDB read preference with globally distributed Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/readpreference-global-distribution |125| Use MongoDB aggregation pipelines on Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/tutorial-aggregation |126| Optimize Azure Cosmos DB costs for dev and production workloads | https://learn.microsoft.com/en-us/azure/cosmos-db/optimize-costs |127| Use Azure Cosmos DB partial document update effectively | https://learn.microsoft.com/en-us/azure/cosmos-db/partial-document-update-faq |128| Choose and manage partition keys in Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/partitioning |129| Optimize performance of Cosmos DB .NET SDK v2 clients | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips |130| Optimize performance of Cosmos DB .NET SDK v3 clients | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-dotnet-sdk-v3 |131| Apply Cosmos DB SDK query performance best practices | https://learn.microsoft.com/en-us/azure/cosmos-db/performance-tips-query-sdk |132| Tune query performance in Azure Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-performance-tuning |133| Choose distribution columns in Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-choose-distribution-column |134| Optimize pgvector performance in Azure Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-optimize-performance-pgvector |135| Use priority-based execution for Cosmos DB workloads | https://learn.microsoft.com/en-us/azure/cosmos-db/priority-based-execution-faq |136| Estimate and manage Cosmos DB request units | https://learn.microsoft.com/en-us/azure/cosmos-db/request-units |137| Apply best practices for scaling Cosmos DB throughput | https://learn.microsoft.com/en-us/azure/cosmos-db/scaling-provisioned-throughput-best-practices |138| Design synthetic partition keys in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/synthetic-partition-keys |139| Optimize Cosmos DB request unit consumption | https://learn.microsoft.com/en-us/azure/cosmos-db/understand-request-unit-consumption |140| Apply background indexing best practices in DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/background-indexing |141| Apply cross-region replication best practices in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/cross-region-replication |142| Implement HA and cross-region replication best practices in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/high-availability-replication-best-practices |143| Follow indexing best practices for DocumentDB collections | https://learn.microsoft.com/en-us/azure/documentdb/how-to-create-indexes |144| Optimize Azure DocumentDB queries using Index Advisor | https://learn.microsoft.com/en-us/azure/documentdb/index-advisor |145| Design sharding strategy for scalable Azure DocumentDB collections | https://learn.microsoft.com/en-us/azure/documentdb/partitioning |146| Apply security best practices for Azure DocumentDB clusters | https://learn.microsoft.com/en-us/azure/documentdb/security |147| Optimize performance for Azure Cassandra managed instances | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/best-practice-performance |148| Apply HA and DR best practices for Cassandra managed instances | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/resilient-applications |149| Use write-through cache to improve Cassandra managed instance performance | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/write-through-cache |150151### Decision Making152| Topic | URL |153|-------|-----|154| Choose analytics and BI options for Azure Cosmos DB data | https://learn.microsoft.com/en-us/azure/cosmos-db/analytics-and-business-intelligence-overview |155| Live dual-write migration to Cosmos DB Cassandra | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/migrate-data-dual-write-proxy |156| Choose scaling options for Cosmos DB Cassandra throughput | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/scale-account-throughput |157| Choose Azure Cosmos DB consistency levels | https://learn.microsoft.com/en-us/azure/cosmos-db/consistency-levels |158| Convert vCores to Cosmos DB RU/s for migration | https://learn.microsoft.com/en-us/azure/cosmos-db/convert-vcore-to-request-unit |159| Decide when to use Cosmos DB dedicated gateway | https://learn.microsoft.com/en-us/azure/cosmos-db/dedicated-gateway |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| Manage multitenant throughput with Cosmos DB fleet pools | https://learn.microsoft.com/en-us/azure/cosmos-db/fleet-pools |162| Use global secondary indexes in Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/global-secondary-indexes |163| Choose Cosmos DB manual vs autoscale throughput | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-choose-offer |164| Migrate from Cosmos DB .NET bulk executor to SDK v3 bulk support | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-migrate-from-bulk-executor-library |165| Migrate from Java bulk executor to Cosmos DB Java V4 bulk support | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-migrate-from-bulk-executor-library-java |166| Migrate from change feed processor library to .NET V3 SDK | 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| Plan and size Cosmos DB integrated cache | https://learn.microsoft.com/en-us/azure/cosmos-db/integrated-cache |169| Migrate Cosmos DB legacy metrics APIs to Azure Monitor | https://learn.microsoft.com/en-us/azure/cosmos-db/legacy-migrate-az-monitor |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| Decide between Cosmos DB MongoDB and MongoDB Atlas | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/compare-mongodb-atlas |175| Evaluate benefits of upgrading to Cosmos DB MongoDB 4.0+ | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/compression-cost-savings |176| Map MongoDB consistency to Cosmos DB levels | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/consistency-mapping |177| Estimate RU/s and cost for Cosmos DB MongoDB workloads | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/estimate-ru-capacity-planner |178| Decide and migrate from Cosmos DB for MongoDB to DocumentDB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/how-to-migrate-documentdb |179| Plan pre-migration steps from MongoDB to Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/pre-migration-steps |180| Plan Cosmos DB network bandwidth usage and costs | https://learn.microsoft.com/en-us/azure/cosmos-db/network-bandwidth |181| Request Cosmos DB data restore from periodic backups via support | https://learn.microsoft.com/en-us/azure/cosmos-db/periodic-backup-request-data-restore |182| Understand burstable compute workloads on Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-burstable-compute |183| Plan and manage Cosmos DB for PostgreSQL cluster upgrades | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-upgrade |184| Determine application type for distributed modeling | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-app-type |185| Choose initial cluster size for Azure Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-scale-initial |186| Choose shard count for distributed tables in Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-shard-count |187| Plan migration from Cosmos DB PostgreSQL to Elastic Cluster | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/migrate-postgresql-elastic-cluster |188| Classify workloads for Cosmos DB for PostgreSQL scaling | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/quickstart-build-scalable-apps-classify |189| Plan compute and storage for Azure Cosmos DB for PostgreSQL clusters | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/resources-compute |190| Estimate and optimize pricing for Azure Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/resources-pricing |191| Choose Azure regions and resiliency options for Azure Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/resources-regions |192| Choose Azure Cosmos DB SQL SDK connectivity modes | https://learn.microsoft.com/en-us/azure/cosmos-db/sdk-connection-modes |193| Choose Cosmos DB serverless vs provisioned throughput | https://learn.microsoft.com/en-us/azure/cosmos-db/serverless |194| Use Azure Cosmos DB for Table with Azure Table Storage | https://learn.microsoft.com/en-us/azure/cosmos-db/table/support |195| Configure global distribution for Azure Cosmos DB for Table | https://learn.microsoft.com/en-us/azure/cosmos-db/table/tutorial-global-distribution |196| Decide between Cosmos DB provisioned and serverless | https://learn.microsoft.com/en-us/azure/cosmos-db/throughput-serverless |197| Use Cosmos DB Migration Assistant for RDBMS decisions | https://learn.microsoft.com/en-us/azure/cosmos-db/vscode-extension/cosmos-db-migration-assistant |198| Decide between Azure DocumentDB and MongoDB Atlas | https://learn.microsoft.com/en-us/azure/documentdb/compare-mongodb-atlas |199| Evaluate MongoDB feature compatibility in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/compatibility-features |200| Assess MongoDB Query Language compatibility in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/compatibility-query-language |201| Choose Azure DocumentDB cross-region failover modes | https://learn.microsoft.com/en-us/azure/documentdb/failover-modes |202| Assess MongoDB readiness for DocumentDB migration | https://learn.microsoft.com/en-us/azure/documentdb/how-to-assess-plan-migration-readiness |203| Evaluate MongoDB compatibility for managed DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/managed-service-compatibility |204| Choose migration options from MongoDB to DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/migration-options |205| Plan MongoDB to DocumentDB migration strategies | https://learn.microsoft.com/en-us/azure/documentdb/migration-options |206| Evaluate vector index algorithms with .NET in DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/quickstart-dotnet-select-algorithm |207| Compare vector index options with Go in DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/quickstart-go-select-algorithm |208| Test and select vector indexes with Java in DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/quickstart-java-select-algorithm |209| Choose vector index algorithms with TypeScript | https://learn.microsoft.com/en-us/azure/documentdb/quickstart-nodejs-select-algorithm |210| Select optimal vector index with Python in DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/quickstart-python-select-algorithm |211| Select Azure DocumentDB regions for deployment | https://learn.microsoft.com/en-us/azure/documentdb/regional-availability |212213### Architecture & Design Patterns214| Topic | URL |215|-------|-----|216| Implement AI agents and memory on Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/ai-agents |217| Design bulk import and update patterns with Cosmos DB bulk executor | https://learn.microsoft.com/en-us/azure/cosmos-db/bulk-executor-overview |218| Apply Azure Cosmos DB change feed design patterns | https://learn.microsoft.com/en-us/azure/cosmos-db/change-feed-design-patterns |219| Use Cosmos DB change feed for real-time analytics | https://learn.microsoft.com/en-us/azure/cosmos-db/changefeed-ecommerce-solution |220| Design agent memory patterns with Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/agentic-memories |221| Design AI knowledge graphs with Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/cosmos-ai-graph |222| Design RAG architectures with Cosmos DB vector search | https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/rag |223| Supply chain traceability solution with Cosmos DB Gremlin | https://learn.microsoft.com/en-us/azure/cosmos-db/gremlin/solution-supply-chain-traceability |224| Configure multiple Azure Functions triggers for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-create-multiple-cosmos-db-triggers |225| Design Azure Cosmos DB multi-region write strategies | https://learn.microsoft.com/en-us/azure/cosmos-db/multi-region-writes |226| Apply per-partition automatic failover in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/per-partition-automatic-failover |227| Plan availability zone outage resiliency for Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-availability-zones |228| Use table colocation for faster queries in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-colocation |229| Design high availability for Azure Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-high-availability |230| Use read replicas in Azure Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/concepts-read-replicas |231| Model high-throughput transactional apps on Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/quickstart-build-scalable-apps-model-high-throughput |232| Design multi-tenant SaaS on Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/quickstart-build-scalable-apps-model-multi-tenant |233| Model real-time analytics apps on Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/quickstart-build-scalable-apps-model-real-time |234| Design microservices using Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/tutorial-design-database-microservices |235| Design scalable multi-tenant database on Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/tutorial-design-database-multi-tenant |236| Design real-time dashboard on Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/tutorial-design-database-realtime |237| Build serverless apps with Cosmos DB and Azure Functions | https://learn.microsoft.com/en-us/azure/cosmos-db/serverless-computing-database |238| Apply Cosmos DB design pattern for social media apps | https://learn.microsoft.com/en-us/azure/cosmos-db/social-media-apps |239| Use Autoscale for variable workloads in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/autoscale |240| Design hybrid BM25 and vector search in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/full-text-search-hybrid |241| Apply half-precision vectors for efficient AI storage in DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/half-precision |242| Use product quantization for scalable vector search in DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/product-quantization |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 behavior in Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/autoscale-faq |250| Use Cosmos DB burst capacity limits effectively | https://learn.microsoft.com/en-us/azure/cosmos-db/burst-capacity |251| Burst capacity limits and usage rules in Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/burst-capacity-faq |252| Choose Azure Cosmos DB change feed modes and limits | https://learn.microsoft.com/en-us/azure/cosmos-db/change-feed-modes |253| Azure Cosmos DB service quotas and default limits reference | https://learn.microsoft.com/en-us/azure/cosmos-db/concepts-limits |254| Understand limits for Cosmos DB continuous backup restore | https://learn.microsoft.com/en-us/azure/cosmos-db/continuous-backup-restore-frequently-asked-questions |255| Use Cosmos DB continuous backup and point-in-time restore | https://learn.microsoft.com/en-us/azure/cosmos-db/continuous-backup-restore-introduction |256| Throughput redistribution limits across Cosmos DB partitions | https://learn.microsoft.com/en-us/azure/cosmos-db/distribute-throughput-across-partitions-faq |257| Reference Azure Cosmos DB service limits and quotas | https://learn.microsoft.com/en-us/azure/cosmos-db/faq |258| Use Cosmos DB lifetime free tier limits | https://learn.microsoft.com/en-us/azure/cosmos-db/free-tier |259| Reference stopwords for Cosmos DB full text search | https://learn.microsoft.com/en-us/azure/cosmos-db/gen-ai/stopwords |260| Review runtime limits for Cosmos DB Gremlin engine | https://learn.microsoft.com/en-us/azure/cosmos-db/gremlin/limits |261| Scale beyond 20-GB logical partition limits with HPK | https://learn.microsoft.com/en-us/azure/cosmos-db/hierarchical-partition-keys-unlimited-scale |262| Alert when Cosmos DB logical partition approaches 20 GB limit | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-alert-on-logical-partition-key-storage-size |263| Change Cosmos DB from serverless to provisioned throughput | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-change-capacity-mode |264| Redistribute throughput across Cosmos DB partitions | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-redistribute-throughput-across-partitions |265| Understand limits and behavior of Cosmos integrated cache | https://learn.microsoft.com/en-us/azure/cosmos-db/integrated-cache-faq |266| Estimate RU charges for key-value operations | https://learn.microsoft.com/en-us/azure/cosmos-db/key-value-store-cost |267| Create Cosmos DB containers with large partition keys | https://learn.microsoft.com/en-us/azure/cosmos-db/large-partition-keys |268| Migrate nonpartitioned Cosmos DB containers to partitioned | https://learn.microsoft.com/en-us/azure/cosmos-db/migrate-containers-partitioned-to-nonpartitioned |269| Use Azure Cosmos DB automatic backup and restore | https://learn.microsoft.com/en-us/azure/cosmos-db/online-backup-and-restore |270| Modify Cosmos DB periodic backup interval and retention limits | https://learn.microsoft.com/en-us/azure/cosmos-db/periodic-backup-modify-interval-retention |271| Change vCore compute quotas per region for Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/howto-compute-quota |272| Cluster limits and quotas for Azure Cosmos DB for PostgreSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/postgresql/reference-limits |273| Use same-account restore with Cosmos DB continuous backup | https://learn.microsoft.com/en-us/azure/cosmos-db/restore-in-account-continuous-backup-frequently-asked-questions |274| Understand performance limits of Cosmos DB serverless | https://learn.microsoft.com/en-us/azure/cosmos-db/serverless-performance |275| Configure and understand Cosmos DB soft delete retention | https://learn.microsoft.com/en-us/azure/cosmos-db/soft-delete |276| Throughput bucket limits and throttling behavior in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/throughput-buckets-faq |277| Review compute and storage configuration options for Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/compute-storage |278| Review compute and storage configuration options for Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/compute-storage |279| Azure DocumentDB FAQ with limits and behaviors | https://learn.microsoft.com/en-us/azure/documentdb/faq |280| Understand Azure DocumentDB Free Tier limits | https://learn.microsoft.com/en-us/azure/documentdb/free-tier |281| Configure Premium SSD v2 performance for Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/high-performance-storage |282| Configure and tune text indexes in DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/how-to-create-text-index |283| Understand indexing defaults and limits in DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/indexing |284| Reference Azure DocumentDB service limits and quotas | https://learn.microsoft.com/en-us/azure/documentdb/limitations |285| Understand document size and batch write limits in Azure DocumentDB | https://learn.microsoft.com/en-us/azure/documentdb/max-document-size |286| Review limits and configuration FAQs for Cassandra managed instances | https://learn.microsoft.com/en-us/azure/managed-instance-apache-cassandra/faq |287288### Security289| Topic | URL |290|-------|-----|291| Use managed identity for Cosmos DB access to Key Vault | https://learn.microsoft.com/en-us/azure/cosmos-db/access-key-vault-managed-identity |292| Configure private endpoints for Cosmos DB analytical store | https://learn.microsoft.com/en-us/azure/cosmos-db/analytical-store-private-endpoints |293| Audit Cosmos DB control plane operations with logs | https://learn.microsoft.com/en-us/azure/cosmos-db/audit-control-plane-logs |294| Secure Azure Cosmos DB for Apache Cassandra accounts | https://learn.microsoft.com/en-us/azure/cosmos-db/cassandra/security |295| Configure RBAC permissions for Cosmos DB continuous restore | https://learn.microsoft.com/en-us/azure/cosmos-db/continuous-backup-restore-permissions |296| Configure Cosmos DB to meet data residency requirements | https://learn.microsoft.com/en-us/azure/cosmos-db/data-residency |297| Understand encryption at rest in Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/database-encryption-at-rest |298| Protect Cosmos DB with Microsoft Defender for Cloud | https://learn.microsoft.com/en-us/azure/cosmos-db/defender-for-cosmos-db |299| Configure Dynamic Data Masking in Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/dynamic-data-masking |300| Configure security for Azure Cosmos DB Gremlin accounts | https://learn.microsoft.com/en-us/azure/cosmos-db/gremlin/security |301| Add and assign RBAC user roles in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-add-assign-user-roles |302| Use Always Encrypted client-side encryption in Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-always-encrypted |303| Configure CORS for Azure Cosmos DB for NoSQL | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-configure-cross-origin-resource-sharing |304| Configure IP firewall rules for Azure Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-configure-firewall |305| Secure Cosmos DB with Network Security Perimeter | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-configure-nsp |306| Configure Azure Private Link for Cosmos DB access | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-configure-private-endpoints |307| Set up virtual network service endpoints for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-configure-vnet-service-endpoint |308| Configure RBAC and Entra ID for Cosmos DB access | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-connect-role-based-access-control |309| Rotate Azure Cosmos DB keys securely with Entra ID | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-rotate-keys |310| Set up cross-tenant customer-managed keys for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-setup-cross-tenant-customer-managed-keys |311| Configure customer-managed keys with Azure Key Vault for Cosmos DB | https://learn.microsoft.com/en-us/azure/cosmos-db/how-to-setup-customer-managed-keys |312| 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 |313| Configure CMK for Cosmos DB using Azure Manage314315…(truncated)
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