Should You Use `defer req.Body.Close()` in HTTP Handlers?

When to Use defer req.Body.Close() in HTTP Handlers

In many web server-side applications, it's common to handle incoming HTTP requests using net/http packages. One question that arises is where to place the defer req.Body.Close() statement.

General Rule: No Need to Close Request Bodies

According to the http.Request documentation, the server automatically closes the request body. Therefore, handlers do not need to explicitly close it.

// The Server will close the request body. The ServeHTTP
// Handler does not need to.

Why Not Use defer?

Using defer req.Body.Close() is redundant and can lead to performance issues. It can create unnecessary HTTP connections and block other requests from being processed.

Therefore, it's best practice to avoid using defer req.Body.Close() in HTTP handlers.

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