azure-cosmos-java

原文涵盖的主题

• Azure Cosmos DB SDK for Java
• Installation
• Environment Variables
• Authentication
• Key-based Authentication
• Async Client
• With Customizations
• Client Hierarchy

Client library for Azure Cosmos DB NoSQL API with global distribution and reactive patterns. Or use Azure SDK BOM: | Class | Purpose | |-------|---------| | CosmosClient / CosmosAsyncClient | Account-level operations | | CosmosDatabase / CosmosAsyncDatabase | Database operations | | CosmosContainer / CosmosAsyncContainer | Container/item operations | Choose a partition key with: High cardinality (many distinct values) Even distribution of data and requests Frequently used in queries | Level | Guarantee | |-------|-----------| | Strong | Linearizability | | Bounded Staleness | Consistent prefix with bounded lag | | Session | Consistent prefix within session | | Consistent Prefix | Reads never see out-of-order writes | | Eventual | No ordering guarantee | All operations consume RUs. Check response headers: 1. Reuse CosmosClient — Create once, reuse throughout application 2. Use async client for high-throughput scenarios 3. Choose partition key carefully — Affects performance and scalability 4. Enable content response on write for immediate access to created items 5. Configure preferred regions for geo-distributed applications 6. Handle 429 errors with retry policies (built-in by defa

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