Yan Chen vagra

in the first half of life, people called me a hero; in the second half of life, people called me a master.

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vagra / db.ts

Last active July 26, 2024 12:04

To replace vercel/postgres from the official Next.js tutorial with a local PostgreSQL setup, you simply need to add this /lib/db.ts file, and then change the imports in /lib/data.ts and /seed/router.ts from vercel/postgres to ./db or ../lib/db. Also, don’t forget to run npm install pg.

	// db.ts
	import { Pool, PoolClient } from 'pg';
	import dotenv from 'dotenv';

	dotenv.config();

	const pool = new Pool({
	connectionString: process.env.POSTGRES_URL,
	});

vagra / routines.go

Last active February 10, 2023 08:47

mutiple goroutines: main -> an inputer -> many worker -> an outputer -> main.

	package main

	import (
	"context"
	"fmt"
	"sync"
	"time"
	)

	func worker(wg *sync.WaitGroup, ctx context.Context, i int, ci <-chan int, co chan<- string) {