go-standard-library

To fix time.After memory leaks in Go, you must avoid using it in long-running loops where the timer is not garbage collected until it fires. Safe replacements involve using time.NewTimer with explicit Stop and Reset calls to manage resources correctly.

sql.Open does not actually establish a database connection in Golang; it merely validates the arguments. You must call the Ping method immediately after sql.Open to verify the connection and configure the connection pool for production reliability.

Best practices for HTTP client and server timeouts in Go require explicitly setting Timeout, ReadTimeout, and WriteTimeout fields. Relying on default zero values leaves production services vulnerable to slowloris attacks and resource exhaustion from hanging connections.

Correct JSON marshaling and embedding in Go requires understanding struct tag behavior and how embedded fields interact with the encoding/json package. Proper patterns prevent silent data omission and incorrect serialization during data processing.

The correct way to use time.Duration in Go is to treat it as an integer representing nanoseconds, avoiding common multiplier mistakes. Applying the correct units prevents subtle bugs in time handling and scheduling logic within production services.

To safely close resources in a Go application, you must use defer statements immediately after successful resource allocation. This pattern ensures HTTP response bodies and SQL rows are closed properly, preventing connection leaks.