Alex Gaynor 12/9/2025

Relish: A new serialization format

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The article introduces Relish, a new open-source binary serialization format and its Rust library. Inspired by ASN.1 DER and Protocol Buffers, it's a Type-[Length]-Value format designed for modestly sized messages in RPC or databases. It supports various types, uses varint length encoding, and emphasizes clear backward compatibility for structs and enums.

Relish: A new serialization format

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