Couchbase Python Client

The Couchbase Python Client is the officially maintained SDK for connecting Python applications to Couchbase Server and Capella. It wraps the high-performance libcouchbase C library with a Pythonic API covering key-value operations, N1QL (SQL++) queries, full-text search, analytics, and eventing, with both synchronous and asyncio/Twisted-based asynchronous interfaces.

Maintained directly by Couchbase, Inc., the client is battle-tested in production deployments and ships prebuilt wheels for major platforms, removing the need to compile the underlying C++ bindings for most users.

What You Get

• Synchronous, asyncio (acouchbase), and Twisted (txcouchbase) client APIs from a single package
• Full key-value operations including sub-document mutations and durability controls
• N1QL (SQL++) query, full-text search, and analytics service clients
• Built-in connection pooling, retry, and observability/tracing hooks (OpenTelemetry support)
• Prebuilt manylinux/macOS/Windows wheels so most installs skip the C++ build toolchain

Common Use Cases

• Building low-latency, high-throughput services backed by Couchbase key-value storage
• Running SQL++ (N1QL) analytical or transactional queries against Couchbase collections
• Integrating full-text search or Couchbase Capella cloud deployments into Python apps
• Powering async Python services (FastAPI, aiohttp) via the acouchbase asyncio API

Under The Hood

Architecture - The package is a thin, ergonomic Python layer (couchbase/, acouchbase/, txcouchbase/) over a C++17 core built on libcouchbase, compiled via CMake/setuptools into a native extension; the Python layer maps cluster/bucket/scope/collection objects onto native handles and exposes key-value, query, search, analytics, and management sub-clients through a shared logic module reused across the sync, asyncio, and Twisted variants. Tech Stack - Core dependencies are the bundled C++ SDK (submodule), OpenSSL, and CMake >=3.18 for source builds, with Python-side packaging via setuptools/pyproject.toml; prebuilt manylinux/macOS/Windows wheels ship for common Python versions so most installs need no compiler. Code Quality - The project has an extensive tests/ suite organized into test_cases covering KV, query, search, analytics, transactions, and tracing, run via pytest with custom markers (pycbc_kv, pycbc_mgmt, etc.) and a mock server for CI; contributions are guided by CONTRIBUTING.md and a formal Gerrit-based review process typical of Couchbase’s engineering process. API Design - The client exposes a consistent object model (Cluster -> Bucket -> Scope -> Collection) across all three concurrency flavors, sub-document mutation builders, and typed exceptions, though the C++ build requirement and multi-flavor API surface add a moderate learning curve for newcomers.