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DTDrizzle Team

•Created by Misc on 3/28/2025 in #help

Consistently hitting max clients/connections on postgres

just testing things out, thought it might solve the issue ahahah

6 replies

DTDrizzle Team

•Created by Misc on 3/28/2025 in #help

Consistently hitting max clients/connections on postgres

I was having this on dev as well due the HRM but i changed a bit the config and it helped a lot, just not sure why this would happen on prod tho.

import { drizzle } from "drizzle-orm/postgres-js";
import postgres from "postgres";
import * as schema from "./schema";

declare global {
  // eslint-disable-next-line no-var
  var postgresSqlClient: ReturnType<typeof postgres> | undefined;
}

let postgresSqlClient;

const connectionString = process.env.DATABASE_URL;

if (!connectionString) {
  throw new Error("DATABASE_URL is not set in .env.local");
}

// Connection pool settings
const poolConfig = {
  max: 20, // Below Supabase limit of 30
  idle_timeout: 10, // 10 seconds
  connect_timeout: 5, // Timeout after 5 seconds if connection cannot be established
  max_lifetime: 60 * 30, // Connection lifetime of 30 minutes
};

if (process.env.NODE_ENV !== "production") {
  if (!global.postgresSqlClient) {
    global.postgresSqlClient = postgres(connectionString, {
      ...poolConfig,
      prepare: false,
    });
  }
  postgresSqlClient = global.postgresSqlClient;
} else {
  postgresSqlClient = postgres(connectionString, {
    ...poolConfig,
    prepare: false,
  });
}

// Disable prefetch as it is not supported for "Transaction" pool mode
export const db = drizzle(postgresSqlClient, { schema });

import { drizzle } from "drizzle-orm/postgres-js";
import postgres from "postgres";
import * as schema from "./schema";

declare global {
  // eslint-disable-next-line no-var
  var postgresSqlClient: ReturnType<typeof postgres> | undefined;
}

let postgresSqlClient;

const connectionString = process.env.DATABASE_URL;

if (!connectionString) {
  throw new Error("DATABASE_URL is not set in .env.local");
}

// Connection pool settings
const poolConfig = {
  max: 20, // Below Supabase limit of 30
  idle_timeout: 10, // 10 seconds
  connect_timeout: 5, // Timeout after 5 seconds if connection cannot be established
  max_lifetime: 60 * 30, // Connection lifetime of 30 minutes
};

if (process.env.NODE_ENV !== "production") {
  if (!global.postgresSqlClient) {
    global.postgresSqlClient = postgres(connectionString, {
      ...poolConfig,
      prepare: false,
    });
  }
  postgresSqlClient = global.postgresSqlClient;
} else {
  postgresSqlClient = postgres(connectionString, {
    ...poolConfig,
    prepare: false,
  });
}

// Disable prefetch as it is not supported for "Transaction" pool mode
export const db = drizzle(postgresSqlClient, { schema });

6 replies

DTDrizzle Team

•Created by cpboyce6 on 3/25/2025 in #help

Hitting connection limits using Pgbouncer

did you ever figure this out? im running into the same issue

2 replies

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