# API Performance Diagnostic Help

- [High DNS Time](/faqs/api-performance-diagnostic-help/high-dns-time.md)
- [High SSL Connection Time](/faqs/api-performance-diagnostic-help/high-ssl-connection-time.md)
- [High Connection Setup Time](/faqs/api-performance-diagnostic-help/high-connection-setup-time.md)
- [Large API Response Size](/faqs/api-performance-diagnostic-help/large-api-response-size.md)
- [High Response Time](/faqs/api-performance-diagnostic-help/high-response-time.md)
- [Compression Not Enabled](/faqs/api-performance-diagnostic-help/compression-not-enabled.md)
- [Server side API Failures](/faqs/api-performance-diagnostic-help/server-side-api-failures.md)
- [Client side API Failures](/faqs/api-performance-diagnostic-help/client-side-api-failures.md)
- [Insecure Connections](/faqs/api-performance-diagnostic-help/insecure-connections.md)