How does LINQ expression tree compilation affect cold start latency in applications?

LINQ expression parsing and translation can increase cold start latency due to runtime query compilation overhead.

When an application starts, the first execution of LINQ queries in EF Core requires parsing expression trees, building internal query models, and generating SQL. This initialization cost contributes to cold start latency. In serverless or microservice environments, this becomes more noticeable because instances are frequently created. Compiled queries reduce this overhead by caching translation results.