Mirror real production traffic to your shadow environment securely. Compare Live vs. Shadow responses instantly using our Async Comparison Engine.
Test new code with real traffic without affecting end-users. Read-only shadow requests ensure no side effects.
Automated diffs for Status Codes (200 vs 500), JSON body changes, and performance slowdowns.
Optimized SQL Analytics with partitioning and indexing to handle millions of request logs efficiently.
Get started with ShadowDeploy in under 2 minutes. Install our npm package and start mirroring traffic.
npm install shadow-deploy-clientconst Shadow = require('shadow-deploy-client');
const shadow = new Shadow({
apiKey: 'your-api-key',
projectId: 'your-project-id'
});
// Add middleware
app.use(shadow.proxyHandler);const express = require('express');
const Shadow = require('shadow-deploy-client');
const app = express();
const shadow = new Shadow({
apiKey: process.env.SHADOW_API_KEY,
projectId: process.env.SHADOW_PROJECT_ID
});
app.use(express.json());
app.use(shadow.proxyHandler); // Add before routes
app.get('/api/users', (req, res) => {
res.json({ users: [] });
});
app.listen(3000);Our HEART & BRAIN architecture ensures your production stays safe while you get deep insights.
Read-only Shadow execution.
Zero latency impact on users.
LIVE v1.0
SHADOW v1.1
CandidateDon't guess. Know exactly what changed. Our Dashboard highlights breaking changes, slowdowns, and errors before they hit production.
Total Requests
1,240,500
Diffs Found
12 Critical
LIVE (200 OK)
{ "id": 123, "role": "user" }
SHADOW (200 OK)
{ "id": 123, "role": "admin" }