Kessoku: Parallel DI for Go

Kessoku is a compile-time dependency injection library that speeds up Go application startup through parallel initialization. Unlike google/wire (sequential), kessoku runs independent providers concurrently.

Use this skill when you are building or debugging kessoku injectors/providers, wiring async dependencies, migrating from google/wire, or troubleshooting go tool kessoku generation problems.

Supporting files: PATTERNS.md for examples, MIGRATION.md for wire migration, TROUBLESHOOTING.md for common errors.

When to Use Kessoku

• Slow startup: Multiple DB connections, API clients, or cache initialization
• Cold start optimization: Serverless/Lambda functions timing out
• google/wire alternative: Want compile-time DI with parallel execution

Quick Start

//go:generate go tool kessoku $GOFILE