Performance

Fast resolves for small explicit service graphs.

Injex 1.3.0 caches dependency plans and uses a fast path for common constructor-injection graphs: singleton infrastructure plus transient application services.

Benchmark shape

The benchmark repeatedly resolves this graph:

singleton Settings instance;
singleton ApiClient(settings);
transient repository, email sender, and audit log;
transient RegisterUser(repository, email_sender, audit_log).

Local result

Library	Median resolve time
manual wiring	`0.265 µs/op`
Injex	`0.818 µs/op`
Wireup, same scope	`0.879 µs/op`
Wireup, scope per operation	`1.559 µs/op`
dependency-injector	`1.727 µs/op`
lagom	`9.794 µs/op`
punq	`56.795 µs/op`

Benchmarks are synthetic and not a universal ranking. They show the approximate overhead of Injex in its target shape: small explicit graphs reused by APIs, workers, CLIs, and tests.

Reproduce

uv run --with punq --with lagom --with dependency-injector --with wireup \
  python benchmarks/resolve_graph.py