Fastly Diagnostics – 4th Tuesdays

In this course, you will learn how to log data, troubleshoot problems, and tune performance.

Common errors
You will learn common errors you may encounter when setting up and configuring Fastly services.

• Common 503 errors on Fastly
• Common service and domain errors
• Error 1000 with CloudFlare DNS
• Fixing cross-domain errors
• Loop detection
• TLS certificate errors
• TLS origin configuration messages

Debugging techniques
Because Fastly doesn’t store customer logs, we provide information about debugging techniques that help you gain insights into your service configurations.

• Changing connection timeouts to your origin
• Checking cache
• Debugging with mtr
• Debugging with WebPageTest
• Fastly’s network status
• Google Pagespeed module errors
• Googlebot crawl stats
• Temporarily disabling caching
• Using GET instead of HEAD for command line caching tests

Streaming logs
You will learn how we support real-time log streaming of data that passes through Fastly.

• About Fastly’s Real-Time Log Streaming features
• Changing log line formats
• Changing where log files are written
• Custom log formats
• Encrypting logs
• Setting up remote log streaming
• Useful conditions for logging
• Useful log formats
• Useful variables to log