41 lines
1.1 KiB
JavaScript
41 lines
1.1 KiB
JavaScript
import mysql from "mysql2/promise";
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// Variablen für den Singleton-Pool
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let cachedPool;
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let connectionCount = 0; // Zähler für die aktiven Verbindungen
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// Funktion zum Abrufen des Pools
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function getPool() {
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if (!cachedPool) {
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cachedPool = mysql.createPool({
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host: process.env.DB_HOST,
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user: process.env.DB_USER,
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password: process.env.DB_PASSWORD,
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database: process.env.DB_NAME,
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port: process.env.DB_PORT,
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connectionLimit: 10, // Setze ein Limit für gleichzeitige Verbindungen
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waitForConnections: true,
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queueLimit: 0, // Unbegrenzte Warteschlange für Verbindungen
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});
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// Ereignisse für das Protokollieren der Verbindungsstatistiken
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cachedPool.on("acquire", () => {
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connectionCount++;
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console.log("Connection acquired. Active connections: ", connectionCount);
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});
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cachedPool.on("release", () => {
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connectionCount--;
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console.log("Connection released. Active connections: ", connectionCount);
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});
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cachedPool.on("enqueue", () => {
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console.log("Waiting for available connection slot.");
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});
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}
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return cachedPool;
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}
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export default getPool;
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