copper | App container — composes config, logging, and lifecycle; runs your app | pkg.go.dev |
chttp | HTTP server, routing, middleware, JSON and HTML rendering | pkg.go.dev |
csql | SQL queries, context-scoped transactions, and migrations | pkg.go.dev |
csql/qb | Query helpers that derive column lists from db: struct tags | pkg.go.dev |
cconfig | Layered TOML configuration with template support | pkg.go.dev |
clogger | Leveled, structured logging with tags, redaction, and hooks | pkg.go.dev |
cerrors | Errors with structured tags and cause chains | pkg.go.dev |
clifecycle | App lifecycle — managed goroutines, graceful shutdown, cleanup hooks | pkg.go.dev |
cmetrics | Prometheus counters and histograms with a declare-then-use registry | pkg.go.dev |