APIs
JSON Marshaling in Go With Tags Omitempty and Custom Types
A tour of encoding/json in Go: struct tags, omitempty and omitzero, nil versus empty, time and bytes, int64 precision, HTML escaping and measured speed.
14 min read
Tag
json
17 articles
APIs
API Versioning in Go and the Strategy That Ages Best
Compare URL, header, media type and date-based API versioning in Go, with one handler serving two views, a frozen v1 test and Sunset headers.
12 min read
APIs
Request Validation in Go APIs Without Reflection Magic
Validate Go API requests with a small collector: JSON Pointer paths, nested fields, cross-field rules, rune-aware lengths and 340 ns for a valid order.
17 min read
APIs
JSON v2 in Go and What Changes for Your Existing Code
What Go's experimental encoding/json/v2 changes: case-sensitive keys, rejected duplicates, empty arrays for nil slices, Duration formats. v1 unchanged.
8 min read
APIs
Tell Null Missing and Zero Apart in Go JSON Decoding
Tell absent, null and zero apart when decoding JSON in Go: why pointers fail, what RawMessage and a generic Optional give you, and omitzero on output.
10 min read