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🍃 feat: Add MongoDB Connection Pool Configuration Options (#8537)

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* 🔧 Feat: Add MongoDB connection pool configuration options to environment variables

* 🔧 feat: Add environment variables for automatic index creation and collection creation in MongoDB connection

---------

Co-authored-by: Atef Bellaaj <slalom.bellaaj@external.daimlertruck.com>
This commit is contained in:
Jordi Higuera 2025-07-25 09:38:35 +05:30 • committed by Danny Avila
parent 2ee68f9e4a
commit abc32e66ce
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2 changed files with 46 additions and 1 deletions
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14
.env.example
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@ -15,6 +15,20 @@ HOST=localhost
PORT=3080
MONGO_URI=mongodb://127.0.0.1:27017/LibreChat
#The maximum number of connections in the connection pool. */
MONGO_MAX_POOL_SIZE=
#The minimum number of connections in the connection pool. */
MONGO_MIN_POOL_SIZE=
#The maximum number of connections that may be in the process of being established concurrently by the connection pool. */
MONGO_MAX_CONNECTING=
#The maximum number of milliseconds that a connection can remain idle in the pool before being removed and closed. */
MONGO_MAX_IDLE_TIME_MS=
#The maximum time in milliseconds that a thread can wait for a connection to become available. */
MONGO_WAIT_QUEUE_TIMEOUT_MS=
# Set to false to disable automatic index creation for all models associated with this connection. */
MONGO_AUTO_INDEX=
# Set to `false` to disable Mongoose automatically calling `createCollection()` on every model created on this connection. */
MONGO_AUTO_CREATE=
DOMAIN_CLIENT=http://localhost:3080
DOMAIN_SERVER=http://localhost:3080

33
api/db/connect.js
View file

@ -1,11 +1,34 @@
require('dotenv').config();
const { isEnabled } = require('@librechat/api');
const { logger } = require('@librechat/data-schemas');
const mongoose = require('mongoose');
const MONGO_URI = process.env.MONGO_URI;
if (!MONGO_URI) {
throw new Error('Please define the MONGO_URI environment variable');
}
/** The maximum number of connections in the connection pool. */
const maxPoolSize = parseInt(process.env.MONGO_MAX_POOL_SIZE) || undefined;
/** The minimum number of connections in the connection pool. */
const minPoolSize = parseInt(process.env.MONGO_MIN_POOL_SIZE) || undefined;
/** The maximum number of connections that may be in the process of being established concurrently by the connection pool. */
const maxConnecting = parseInt(process.env.MONGO_MAX_CONNECTING) || undefined;
/** The maximum number of milliseconds that a connection can remain idle in the pool before being removed and closed. */
const maxIdleTimeMS = parseInt(process.env.MONGO_MAX_IDLE_TIME_MS) || undefined;
/** The maximum time in milliseconds that a thread can wait for a connection to become available. */
const waitQueueTimeoutMS = parseInt(process.env.MONGO_WAIT_QUEUE_TIMEOUT_MS) || undefined;
/** Set to false to disable automatic index creation for all models associated with this connection. */
const autoIndex =
process.env.MONGO_AUTO_INDEX != undefined
? isEnabled(process.env.MONGO_AUTO_INDEX) || false
: undefined;
/** Set to `false` to disable Mongoose automatically calling `createCollection()` on every model created on this connection. */
const autoCreate =
process.env.MONGO_AUTO_CREATE != undefined
? isEnabled(process.env.MONGO_AUTO_CREATE) || false
: undefined;
/**
* Global is used here to maintain a cached connection across hot reloads
* in development. This prevents connections growing exponentially
@ -26,13 +49,21 @@ async function connectDb() {
if (!cached.promise || disconnected) {
const opts = {
bufferCommands: false,
...(maxPoolSize ? { maxPoolSize } : {}),
...(minPoolSize ? { minPoolSize } : {}),
...(maxConnecting ? { maxConnecting } : {}),
...(maxIdleTimeMS ? { maxIdleTimeMS } : {}),
...(waitQueueTimeoutMS ? { waitQueueTimeoutMS } : {}),
...(autoIndex != undefined ? { autoIndex } : {}),
...(autoCreate != undefined ? { autoCreate } : {}),
// useNewUrlParser: true,
// useUnifiedTopology: true,
// bufferMaxEntries: 0,
// useFindAndModify: true,
// useCreateIndex: true
};
logger.info('Mongo Connection options');
logger.info(JSON.stringify(opts, null, 2));
mongoose.set('strictQuery', true);
cached.promise = mongoose.connect(MONGO_URI, opts).then((mongoose) => {
return mongoose;