vmihailenco/msgpack

Health v2 · maintenance only

Adoption not part of the score

2673 stars · 255 forks observed · 2026-08-28

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

A MessagePack encoding library for Go, providing fast binary serialization as a drop-in replacement for encoding/. It supports structs, maps, custom encoders/decoders, extensions, and struct tag customization.

Use cases

• serialize Go structs to a compact binary format
• replace encoding/ with a faster serializer
• encode and decode MessagePack messages in Go
• marshal time.Time and interface{} values to binary
• customize field names and omit empty fields when encoding
• encode type information with MessagePack extensions

When to choose

• you need fast, compact binary serialization in Go
• you want a JSON-like API but with better performance and smaller payloads
• you need custom encoding logic or type-aware extensions
• you want struct tag control similar to encoding/

When to avoid

• you need human-readable output
• you are not working in Go
• you need cross-language schemas with strict versioning (consider protobuf)

Facets

library · maturity stable

serialization developer-tools backend go cross-platform msgpack encoding golang binary-format -alternative data-engineering

Member repositories

For agents

markdown · JSON · MCP: product_card(name="vmihailenco/msgpack")