Dependency Injection lacks native singleton support

4/10 Low

FastAPI's DI system doesn't natively support singletons, forcing teams to manually manage shared resources through singleton classes or adopt third-party DI libraries.

FastAPI
Category
config
Workaround
partial
Stage
build
Freshness
persistent
Scope
single_lib
Recurring
Yes
Buyer Type
team

Sources

Collection History

Query: “What are the most common pain points with FastAPI for developers in 2025?”4/4/2026

Dependency Injection (DI) lacks native support for singleton, enabling teams to manage shared resources through singleton classes manually or making use of third-party DI libraries.

Created: 4/4/2026Updated: 4/4/2026