codesnips

go

go 
package hub

type Hub struct {
	subscribers map[*Subscriber]struct{}
	broadcast   chan []byte
	register    chan registration

Concurrent Fan-Out Event Hub With Non-Blocking Broadcast in Go

go concurrency channels
by codesnips 3 tabs
go 
package migrate

import (
  "context"

  "github.com/jackc/pgx/v5/pgxpool"

Run database migrations on startup (with a guard)

go postgres migrations
by Leah Thompson 1 tab
go 
package webhooks

import (
  "bytes"
  "crypto/hmac"
  "crypto/sha256"

Webhook signature verification with HMAC (timing-safe compare)

go security http
by Leah Thompson 1 tab