kelindar/column

Health v2 · maintenance only

Adoption not part of the score

1512 stars · 68 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A Go library providing a high-performance, columnar, in-memory storage engine with bitmap indexing. It supports fast querying, batch updates, SIMD-enabled aggregation and filtering, transactions, and change data streams with zero heap allocations during queries.

Use cases

• store and query millions of rows in memory in Go
• build fast columnar filtering with bitmap indexes
• run zero-allocation aggregate queries like sum and avg
• stream database commits as a change data feed
• snapshot an in-memory collection to disk
• implement TTL-based row expiration in a Go service

When to choose

• you need an embedded, in-memory columnar store inside a Go application
• query performance and cache efficiency matter more than persistence features
• you want transactional updates with bitmap-based filtering
• you need change data capture from an in-memory dataset

When to avoid

• you need durable disk-based storage with full ACID guarantees
• you need SQL, joins, or a client-server database
• your dataset doesn't fit in memory
• you're not working in Go

Facets

library · maturity active

database search-engine caching concurrency databases analytics performance go windows columnar-storage bitmap-index in-memory-database soa simd zero-allocation real-time linux macos

Member repositories

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