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💽 fix: Exclude index page / from static cache settings (#7382)

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* Disable default static caching for app's index page

* Update index.html related environment variables in `.env.example`

* Fix linting

* Update index.spec.js

---------

Co-authored-by: Danny Avila <danacordially@gmail.com>
This commit is contained in:
Sebastien Bruel 2025-05-16 23:18:52 +09:00 • committed by GitHub
parent a92ac23c44
commit 353adceb0c
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7 changed files with 96 additions and 6 deletions
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6
.env.example
View file

@ -563,9 +563,9 @@ HELP_AND_FAQ_URL=https://librechat.ai
# users always get the latest version. Customize #
# only if you understand caching implications. #
# INDEX_HTML_CACHE_CONTROL=no-cache, no-store, must-revalidate
# INDEX_HTML_PRAGMA=no-cache
# INDEX_HTML_EXPIRES=0
# INDEX_CACHE_CONTROL=no-cache, no-store, must-revalidate
# INDEX_PRAGMA=no-cache
# INDEX_EXPIRES=0
# no-cache: Forces validation with server before using cached version
# no-store: Prevents storing the response entirely

9
api/server/index.js
View file

@ -24,10 +24,13 @@ const routes = require('./routes');
const { PORT, HOST, ALLOW_SOCIAL_LOGIN, DISABLE_COMPRESSION, TRUST_PROXY } = process.env ?? {};
const port = Number(PORT) || 3080;
// Allow PORT=0 to be used for automatic free port assignment
const port = isNaN(Number(PORT)) ? 3080 : Number(PORT);
const host = HOST || 'localhost';
const trusted_proxy = Number(TRUST_PROXY) || 1; /* trust first proxy by default */
const app = express();
const startServer = async () => {
if (typeof Bun !== 'undefined') {
axios.defaults.headers.common['Accept-Encoding'] = 'gzip';
@ -36,7 +39,6 @@ const startServer = async () => {
logger.info('Connected to MongoDB');
await indexSync();
const app = express();
app.disable('x-powered-by');
app.set('trust proxy', trusted_proxy);
@ -179,3 +181,6 @@ process.on('uncaughtException', (err) => {
process.exit(1);
});
// export app for easier testing purposes
module.exports = app;

78
api/server/index.spec.js Normal file
View file

@ -0,0 +1,78 @@
const fs = require('fs');
const path = require('path');
const request = require('supertest');
const { MongoMemoryServer } = require('mongodb-memory-server');
const mongoose = require('mongoose');
describe('Server Configuration', () => {
// Increase the default timeout to allow for Mongo cleanup
jest.setTimeout(30_000);
let mongoServer;
let app;
/** Mocked fs.readFileSync for index.html */
const originalReadFileSync = fs.readFileSync;
beforeAll(() => {
fs.readFileSync = function (filepath, options) {
if (filepath.includes('index.html')) {
return '<!DOCTYPE html><html><head><title>LibreChat</title></head><body><div id="root"></div></body></html>';
}
return originalReadFileSync(filepath, options);
};
});
afterAll(() => {
// Restore original fs.readFileSync
fs.readFileSync = originalReadFileSync;
});
beforeAll(async () => {
mongoServer = await MongoMemoryServer.create();
process.env.MONGO_URI = mongoServer.getUri();
process.env.PORT = '0'; // Use a random available port
app = require('~/server');
// Wait for the app to be healthy
await healthCheckPoll(app);
});
afterAll(async () => {
await mongoServer.stop();
await mongoose.disconnect();
});
it('should return OK for /health', async () => {
const response = await request(app).get('/health');
expect(response.status).toBe(200);
expect(response.text).toBe('OK');
});
it('should not cache index page', async () => {
const response = await request(app).get('/');
expect(response.status).toBe(200);
expect(response.headers['cache-control']).toBe('no-cache, no-store, must-revalidate');
expect(response.headers['pragma']).toBe('no-cache');
expect(response.headers['expires']).toBe('0');
});
});
// Polls the /health endpoint every 30ms for up to 10 seconds to wait for the server to start completely
async function healthCheckPoll(app, retries = 0) {
const maxRetries = Math.floor(10000 / 30); // 10 seconds / 30ms
try {
const response = await request(app).get('/health');
if (response.status === 200) {
return; // App is healthy
}
} catch (error) {
// Ignore connection errors during polling
}
if (retries < maxRetries) {
await new Promise((resolve) => setTimeout(resolve, 30));
await healthCheckPoll(app, retries + 1);
} else {
throw new Error('App did not become healthy within 10 seconds.');
}
}

1
api/server/utils/staticCache.js
View file

@ -14,6 +14,7 @@ const staticCache = (staticPath) =>
res.setHeader('Cache-Control', `public, max-age=${maxAge}, s-maxage=${sMaxAge}`);
}
},
index: false,
});
module.exports = staticCache;

2
api/strategies/ldapStrategy.js
View file

@ -23,7 +23,7 @@ const {
// Check required environment variables
if (!LDAP_URL || !LDAP_USER_SEARCH_BASE) {
return null;
module.exports = null;
}
const searchAttributes = [

2
api/test/__mocks__/logger.js
View file

@ -8,6 +8,7 @@ jest.mock('winston', () => {
mockFormatFunction.printf = jest.fn();
mockFormatFunction.errors = jest.fn();
mockFormatFunction.splat = jest.fn();
mockFormatFunction.json = jest.fn();
return {
format: mockFormatFunction,
createLogger: jest.fn().mockReturnValue({
@ -19,6 +20,7 @@ jest.mock('winston', () => {
transports: {
Console: jest.fn(),
DailyRotateFile: jest.fn(),
File: jest.fn(),
},
addColors: jest.fn(),
};

4
api/test/jestSetup.js
View file

@ -6,3 +6,7 @@ process.env.BAN_VIOLATIONS = 'true';
process.env.BAN_DURATION = '7200000';
process.env.BAN_INTERVAL = '20';
process.env.CI = 'true';
process.env.JWT_SECRET = 'test';
process.env.JWT_REFRESH_SECRET = 'test';
process.env.CREDS_KEY = 'test';
process.env.CREDS_IV = 'test';