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Start here
Getting started
Basics
  • Adding CNAME records
  • Content and its delivery
  • Shielding
  • Using Fastly's global POP network
  • Working with domains
  • Working with health checks
  • Working with hosts
  • Working with services
Web interface
  • About the account menu
  • About the Compute page
  • About the Deliver page
  • About the Domain Inspector stats
  • About the Home page
  • About the Origin Inspector stats
  • About the Secure page
  • About the stats for Compute services
  • About the stats for Deliver services
  • About the Stats page
  • About the web interface controls
Configuration
Caching
  • Caching configuration best practices
  • Controlling caching
  • Enabling API caching
  • Implementing API cache control
  • Overriding caching defaults based on a backend response
  • Preventing cache poisoning via HTTP X-headers
  • Segmented Caching
Conditions
  • About conditions
  • Troubleshooting conditions
  • Using conditions
Custom VCL
  • About VCL Snippets
  • Authenticating before returning a request
  • Basic authentication
  • Custom responses that don't hit origin servers
  • Enabling URL token validation
  • Guide to VCL
  • Isolating header values without regular expressions
  • Manipulating the cache key
  • Response Cookie handling
  • Support for the Edge-Control header
  • Understanding the different PASS action behaviors
  • Uploading custom VCL
  • Using dynamic VCL Snippets
  • Using regular VCL Snippets
  • VCL regular expression cheat sheet
Dictionaries
  • About dictionaries
  • Working with dictionaries using the web interface
Domains & Origins
  • Changing origins based on user location
  • Failover configuration
  • IPv6 support
  • Maintaining separate HTTP and HTTPS requests to origin servers
  • Routing assets to different origins
  • Setting up redundant origin servers
  • Specifying an override host
  • Using Fastly with apex domains
Headers
  • Adding or modifying headers on HTTP requests and responses
  • Enabling cross-origin resource sharing (CORS)
  • Removing headers from backend response
  • Setting Content Type based on file extension
Image optimization
  • About Fastly Image Optimizer
Load balancing
  • About Dynamic Servers
  • Automatic load balancing
  • Creating and using pools with Dynamic Servers
  • Creating and using server entries with Dynamic Servers
Performance
  • Enabling automatic gzipping
  • Enabling HTTP/3 for Fastly services
  • Failure modes with large files
  • HTTP/2 server push
  • Making query strings agnostic
  • Precision Path
  • Serving stale content
  • Streaming Miss
Purging
  • Authenticating URL purge requests via API
  • Purging a URL via the web interface
  • Purging all content via the web interface
  • Purging with surrogate keys
  • Setting Surrogate-Key headers for Amazon S3 origins
  • Soft purges
  • Wildcard purges
  • Working with surrogate keys
Requests
  • Checking multiple backends for a single request
  • Conditionally changing a URL
  • How request settings are applied
Responses
  • Creating and customizing a robots.txt file
  • Creating error pages with custom responses
  • Responses tutorial
Video
  • Adaptive bitrate playback URL guidelines
  • Collecting OTFP metrics
  • Configuration guidelines for live streaming
Security
Access Control Lists
  • About ACLs
  • Manually creating access control lists
  • Using the IP block list
  • Working with ACLs using the web interface
Rate limiting
  • About rate limiting
  • Working with rate limiting policies
Securing communications
  • Support for App Transport Security
Security measures
  • Data management
  • Fastly Next-Gen WAF (powered by Signal Sciences) security measures
  • Penetration testing your service behind Fastly
  • Security measures
  • Security program
TLS
  • Enabling HSTS through Fastly
  • Enabling TLS 1.3 through Fastly
  • Forcing a TLS redirect
  • Serving HTTPS traffic using certificates you manage
  • Serving HTTPS traffic using Fastly-managed certificates
  • Setting up free TLS
  • TLS termination
Web Application Firewall (2020)
  • About the Fastly WAF dashboard (2020)
  • About the Fastly WAF rule management interface (2020)
  • Creating a custom WAF error page (2020)
  • Fastly WAF logging (2020)
  • Managing rules on the Fastly WAF (2020)
  • WAF Rule Exclusions (2020)
  • Web Application Firewall (WAF) (2020)
Web Application Firewall (original)
  • About the Fastly WAF dashboard (original)
  • About the Fastly WAF rule management interface (original)
  • Creating a custom WAF error page (original)
  • Fastly WAF logging (original)
  • Fastly WAF rule set updates and maintenance (original)
  • Managing the Fastly WAF (original)
  • Web Application Firewall (WAF) (original)
Integrations
Logging endpoints
  • Log streaming: Amazon Kinesis Data Streams
  • Log streaming: Amazon S3
  • Log streaming: Microsoft Azure Blob Storage
  • Log streaming: Cloud Files
  • Log streaming: Coralogix
  • Log streaming: Datadog
  • Log streaming: DigitalOcean Spaces
  • Log streaming: Elasticsearch
  • Log streaming: FTP
  • Log streaming: Google BigQuery
  • Log streaming: Google Cloud Pub/Sub
  • Log streaming: Google Cloud Storage
  • Log streaming: Honeycomb
  • Log streaming: HTTPS
  • Log streaming: Hydrolix
  • Log streaming: Kafka
  • Log streaming: Log Shuttle
  • Log streaming: LogDNA
  • Log streaming: Logentries
  • Log streaming: Loggly
  • Log streaming: Heroku's Logplex
  • Log streaming: New Relic Logs
  • Log streaming: OpenStack
  • Log streaming: Oracle Cloud Storage
  • Log streaming: Papertrail
  • Log streaming: Scalyr
  • Log streaming: SFTP
  • Log streaming: Shape Log Analysis
  • Log streaming: Splunk
  • Log streaming: Storj DCS
  • Log streaming: Sumo Logic
  • Log streaming: Syslog
  • Log streaming: Wasabi Hot Cloud Storage
Non-Fastly services
  • Alibaba Object Storage Service
  • Amazon S3
  • Backblaze B2 Cloud Storage
  • Data transfer with Backblaze B2
  • DigitalOcean Spaces
  • Discounted egress from Google
  • Google Cloud Storage
  • Google Compute Engine
  • HUMAN BotGuard for Applications
  • Microsoft Azure Blob Storage
  • Oracle Cloud Storage
  • Outbound data transfer from Azure
  • PerimeterX Bot Defender
  • Storj DCS Object Storage
  • Wasabi Hot Cloud Storage
Diagnostics
Common errors
  • Common 400 errors on Fastly
  • Common 503 errors on Fastly
  • Common OTFP errors
  • 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
  • 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
  • About Fastly's real-time log streaming features
  • Changing log compression formats
  • Changing log line formats
  • Changing log placement
  • Changing where log files are written
  • Creating an AWS IAM role for Fastly logging
  • Custom log formats
  • Encrypting logs
  • Setting up remote log streaming
  • Useful conditions for logging
  • Useful log formats
  • Useful variables to log
Account info
Account management
  • Account lockouts
  • Changing company profile details
  • Enabling an IP allowlist for account logins through the web interface
  • Enabling and disabling two-factor authentication
  • Finding and managing your account info
  • Monitoring account activity with the audit log
  • Reviewing service activity with the event log
  • Using API tokens
Billing
  • Account types
  • How we calculate your bill
  • Paying your bill
User access and control
  • Adding and deleting user accounts
  • Configuring user roles and permissions
  • Name and password changes
  • Managing multiple accounts
  • Setting up single sign-on (SSO)
  • Transferring services to other accounts
  • Unsubscribing from Fastly marketing email
Compute@Edge
Compute@Edge logging endpoints
  • Compute@Edge log streaming: Amazon Kinesis Data Streams
  • Compute@Edge log streaming: Amazon S3
  • Compute@Edge log streaming: Microsoft Azure Blob Storage
  • Compute@Edge log streaming: Cloud Files
  • Compute@Edge log streaming: Coralogix
  • Compute@Edge log streaming: Datadog
  • Compute@Edge log streaming: DigitalOcean Spaces
  • Compute@Edge log streaming: Elasticsearch
  • Compute@Edge log streaming: FTP
  • Compute@Edge log streaming: Google BigQuery
  • Compute@Edge log streaming: Google Cloud Pub/Sub
  • Compute@Edge log streaming: Google Cloud Storage
  • Compute@Edge log streaming: Honeycomb
  • Compute@Edge log streaming: HTTPS
  • Compute@Edge log streaming: Kafka
  • Compute@Edge log streaming: Log Shuttle
  • Compute@Edge log streaming: LogDNA
  • Compute@Edge log streaming: Logentries
  • Compute@Edge log streaming: Loggly
  • Compute@Edge log streaming: Heroku's Logplex
  • Compute@Edge log streaming: New Relic Logs
  • Compute@Edge log streaming: OpenStack
  • Compute@Edge log streaming: Papertrail
  • Compute@Edge log streaming: Scalyr
  • Compute@Edge log streaming: SFTP
  • Compute@Edge log streaming: Splunk
  • Compute@Edge log streaming: Sumo Logic
  • Compute@Edge log streaming: Syslog
Reference
  • Resource limits
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    Diagnostics

    These articles describe how to log data, troubleshoot problems, and tune performance.

    Common errors

    These articles describe common errors you may encounter when setting up and configuring Fastly services.

    • Common 400 errors on Fastly
    • Common 503 errors on Fastly
    • Common OTFP errors
    • 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

    These articles describe how we support real-time log streaming of data that passes through Fastly.

    • About Fastly's real-time log streaming features
    • Changing log compression formats
    • Changing log line formats
    • Changing log placement
    • Changing where log files are written
    • Creating an AWS IAM role for Fastly logging
    • Custom log formats
    • Encrypting logs
    • Setting up remote log streaming
    • Useful conditions for logging
    • Useful log formats
    • Useful variables to log
    Back to Top
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