codesnips

go

go 
package main

import (
	"log"
	"net/http"
	"time"

Instrumenting Go HTTP Handlers with Prometheus Counters and Histograms

prometheus metrics observability
by codesnips 3 tabs
go 
package config

import (
  "fmt"
  "os"
  "strconv"

Robust environment parsing for bool/int with explicit defaults

go config reliability
by Leah Thompson 1 tab
go 
package observability

import (
  "time"

  "go.uber.org/zap"

Sampling logs to reduce noise during high-QPS incidents

go logging observability
by Leah Thompson 1 tab
go 
package pricecache

import (
	"context"
	"sync"

Collapse Concurrent Identical Requests in Go with singleflight

go singleflight concurrency
by codesnips 3 tabs
go 
package auth

import "golang.org/x/crypto/bcrypt"

func HashPassword(pw string, cost int) ([]byte, error) {
  if cost == 0 {

Password hashing with bcrypt and a calibrated cost

go security auth
by Leah Thompson 1 tab
go 
package upload

import (
	"errors"
	"io"
	"log"

Streaming Multipart File Uploads to Disk in Go net/http

go net-http multipart
by codesnips 3 tabs
go 
package realtime

import (
  "fmt"
  "net/http"
  "time"

Server-Sent Events (SSE) with heartbeats and client cleanup

go http sse
by Leah Thompson 1 tab
go 
package webhook

import (
	"encoding/json"
	"io"
	"net/http"

Verifying and Dispatching Stripe-Style Webhooks by Event Type in Go

webhooks go hmac
by codesnips 3 tabs
go 
package store

import (
  "context"

  "github.com/jackc/pgx/v5"

Row-level locking with SELECT ... FOR UPDATE in a transaction

go postgres transactions
by Leah Thompson 1 tab
go 
package cleanup

import "errors"

func CloseAll(closers ...func() error) error {
  var errs []error

errors.Join for cleanup (surface multiple close failures)

go errors reliability
by Leah Thompson 1 tab
go 
package health

import (
	"context"
	"sync"
	"time"

Concurrent Readiness Health Check Endpoint in Go with Timeouts

go health-check readiness
by codesnips 3 tabs
go 
package logctx

import (
	"context"
	"log/slog"
)

Request-Scoped Structured Logging with slog and Context in Go

go logging slog
by codesnips 3 tabs