Choosing between MessagePack, BSON, and JSON
Compare readability, type range, indexing, ecosystem, and transport cost—not just file size.
Different priorities
JSON is readable and widely supported. MessagePack reduces transport size with binary encoding. BSON adds binary types and length information for document-database workflows.
Three questions
Will people inspect the data? Must dates, binary values, or large integers survive? Is the consumer language or database fixed? These questions predict maintenance cost better than one compression test and also determine debugging and migration effort.
Check compatibility
Compare fields, array order, integer ranges, dates, and null versus missing semantics. A binary format is not encryption; secure transport and access control remain separate concerns and must be configured independently.
Related tools
Sources
Last updated: 2026-08-23