google/leveldb

Health v2 · maintenance only

Adoption not part of the score

39365 stars · 8210 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

LevelDB is a fast embedded key-value storage library from Google providing an ordered mapping from string keys to string values. It is a C++ library, not a server, with support for atomic batches, snapshots, iteration, and Snappy/Zstd compression.

Use cases

• embed a fast key-value store in a C++ application
• store sorted key-value data locally without running a database server
• build a caching or metadata layer on top of an LSM-tree storage engine
• persist indexed data with forward and backward iteration
• implement a custom storage backend with pluggable OS and compression interfaces

When to choose

• you need an embedded, single-process key-value store with no server overhead
• you want sorted data with custom comparators, snapshots, and atomic batch writes
• you need a proven, lightweight storage engine to build higher-level databases on

When to avoid

• you need SQL queries, secondary indexes, or a relational data model
• multiple processes must access the same database concurrently
• you need built-in client-server network access
• you expect active feature development, since the repo receives only limited maintenance

Facets

library · maturity maintenance

database caching serialization databases developer-tools backend cpp cross-platform windows key-value-store embedded-database lsmtree storage-engine snappy-compression linux macos

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markdown · JSON · MCP: product_card(name="google/leveldb")