After migrating a WordPress site, it’s common to encounter performance slowdowns and broken integrations. In this guide, we’ll walk through how to diagnose and resolve backend performance issues and API failures that often occur after a migration.
Issue Background
Following a WordPress migration, a site began experiencing two critical issues:
- Slow backend performance, making it difficult to manage content
- API failures, preventing key functionality such as delivering digital products
Diagnosis
A technical review identified two main problem areas:
- Backend load times increased after migration
- Caching and optimization settings were not properly configured
- Plugins or themes may have been outdated or incompatible
- API requests were failing due to configuration or environment changes
Resolution Steps
1. Update plugins and themes
- Update all plugins and themes to the latest versions
- Remove unused or outdated plugins
2. Optimize backend performance
- Use caching plugins like W3 Total Cache or WP Super Cache
- Clear all caches after setup
- Review hosting resources and server configuration
3. Run performance tests
- Use GTmetrix or Google PageSpeed Insights
- Identify bottlenecks and slow resources
4. Verify API configuration
- Check API keys and endpoints
- Reconnect integrations if necessary
5. Test API endpoints
- Use tools like Postman
- Confirm expected responses
6. Check server and firewall settings
- Ensure API requests are not blocked
- Review security rules and whitelist endpoints
7. Perform full testing
- Test backend performance
- Verify API-dependent features
Final Outcome
After optimizing performance and correcting API configurations, the site achieved faster backend performance and fully restored API functionality.
If your WordPress site is experiencing issues after a migration, contact Freshy for expert help.
