How to implement error handling caused by incompatibility of changes in backward compatibility?

To handle errors related to incompatible changes (breaking changes), the following approaches can be used:

• API Versioning: When making changes that break backward compatibility, a new API version is created. Clients continue to use the old version until they switch to the new one.

• Fallbacks and Compatibility Checks: Handle different versions of data or requests in the code to avoid failures.

• Logging and Error Monitoring: Track cases of incompatibility and respond quickly.

Example in Node.js with route versioning:

const express = require('express');
const app = express();

// Version 1
app.get('/api/v1/resource', (req, res) => {
  res.send('Response from API v1');
});

// Version 2 with changes
app.get('/api/v2/resource', (req, res) => {
  res.send('Response from API v2 with breaking changes');
});

app.listen(3000);