#timing code explainers

python

import time
from contextlib import contextmanager

A reusable timing context manager in Python

context-manager timing generators

Intermediate 5 steps

rust

use std::time::Instant;
use tracing::info;
 
pub struct Timer {

A scope-guard timer with Drop in Rust

raii drop-guard timing

Intermediate 7 steps

java

@Component
public class RequestTimingInterceptor implements HandlerInterceptor {
 
    private static final Logger log = LoggerFactory.getLogger(RequestTimingInterceptor.class);

How a Spring HandlerInterceptor times requests

interceptor request-lifecycle logging

Intermediate 6 steps