server.js

import mongoose from "mongoose";
import config from "./config/config.js";

process.on("uncaughtException", (err) => {
   console.log("UNCAUGHT EXCEPTION! 💥 Shutting down...");
   console.log(err.name, err.message);
   process.exit(1);
});

import app from "./app.js";

const DB = config.DB_URL.replace("<password>", config.DB_PASSWORD);

// DB connection

const options = {
   // autoIndex: false, // Don't build indexes
   maxPoolSize: 10, // Maintain up to 10 socket connections
   serverSelectionTimeoutMS: 10000, // Keep trying to send operations for 5 seconds
   // socketTimeoutMS: 45000, // Close sockets after 45 seconds of inactivity
   // family: 4, // Use IPv4, skip trying IPv6
   useUnifiedTopology: true,
   useNewUrlParser: true,
};
mongoose
   .connect(DB, options)
   .then(() => {
      console.log("DB connected successfully!");
   })
   .catch((err) => console.log(err));

const port = process.env.PORT || config.PORT || 8080;
const ENV = process.env.NODE_ENV || "prod";
const server = app.listen(port, () => {
   console.log(
      `Server started on PORT: ${port} in ${ENV.trim().toUpperCase()} mode`
   );
});

process.on("unhandledRejection", (err) => {
   console.log("UNHANDLED REJECTION! 💥 Shutting down...");
   console.log(err.name, err.message);
   server.close(() => {
      process.exit(1);
   });
});

process.on("SIGTERM", () => {
   console.log("👋 SIGTERM RECEIVED. Shutting down gracefully");
   server.close(() => {
      console.log("💥 Process terminated!");
   });
});