- About the web interface controls
- Always-on DDoS mitigation
- Browser recommendations when using the Fastly web interface
- Content and its delivery
- Fastly POP locations
- Getting started with Fastly
- How caching and CDNs work
- How Fastly's CDN Service works
- HTTP status codes cached by default
- Self-provisioned Fastly services
- Sign up and create your first service
- Working with services
Domains & Origins
Domains & Origins
- Changing origins based on user location
- Connecting to origins
- Enabling global POPs
- 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
- About Dynamic Servers
- Authenticating URL purge requests via API
- Cache control tutorial
- Caching configuration best practices
- Controlling caching
- Creating and using pools with Dynamic Servers
- Creating and using server entries with Dynamic Servers
- Enabling API caching
- Enabling automatic gzipping
- Failure modes with large files
- Getting started with surrogate keys
- HTTP/2 server push
- Implementing API cache control
- Large File Support
- Logging purge requests
- Making query strings agnostic
- Purging API cache with surrogate keys
- Request collapsing
- Serving stale content
- Setting Surrogate-Key headers based on a URL
- Setting Surrogate-Key headers for Amazon S3 origins
- Single purges
- Soft purges
- Streaming Miss
- Wildcard purges
- Accept-Language header VCL features
- Authenticating before returning a request
- Basic authentication
- Creating location-based tagging
- Custom responses that don't hit origin servers
- Delivering different content to different devices
- Enabling URL token validation
- Guide to VCL
- Isolating header values without regular expressions
- Manipulating the cache key
- IP geolocation variables: Migrating to the new dataset
- Overriding which IP address the geolocation features use
- Response Cookie handling
- Support for the Edge-Control header
- Understanding the different PASS action behaviors
- Using edge side includes (ESI)
- VCL regular expression cheat sheet
Access Control Lists
Monitoring and testing
Web Application Firewall
- Log streaming: Amazon S3
- Log streaming: Microsoft Azure Blob Storage
- Log streaming: Cloud Files
- Log streaming: Datadog
- Log streaming: DigitalOcean Spaces
- Log streaming: FTP
- Log streaming: Google BigQuery
- Log streaming: Google Cloud Storage
- Log streaming: Honeycomb
- Log streaming: Kafka
- Log streaming: Log Shuttle
- Log streaming: LogDNA
- Log streaming: Logentries
- Log streaming: Loggly
- Log streaming: Heroku's Logplex
- Log streaming: OpenStack
- Log streaming: Papertrail
- Log streaming: Scalyr
- Log streaming: SFTP
- Log streaming: Splunk
- Log streaming: Sumo Logic
- Log streaming: Syslog
User access and control
Temporarily disabling caching
Last updated August 09, 2018
Caching can be disabled:
- at the individual URL level,
- at the browser level, and
- at the site level.
Disabling caching at the individual URL level
To disable caching at the individual URL level:
- Create a request setting that always forces a pass.
- Add a condition to the request setting that looks for specific URLs.
- Activate the new version of your service to enable the setting.
Disabling caching at the browser level
Theoretically, all browsers should follow the stated rules of the HTTP standard. In practice, however, some browsers don't strictly follow these rules. The following combination of headers seems to force absolutely no caching with every browser we've tested.
1 2 3 Cache-Control: no-cache, no-store, private, must-revalidate, max-age=0, max-stale=0, post-check=0, pre-check=0 Pragma: no-cache Expires: 0
In addition, IE8 has some odd behavior to do with the back button. Adding
Vary: * to the headers seems to fix the problem.
IMPORTANT: If you want your content cached in Fastly but not cached on the browser, you must not add these headers on your origin server. Instead, add these as new Headers on the Content page and be sure the Type is set to Response.
Disabling caching at the site level
You can disable caching at the site level by creating a VCL Snippet to pass on all requests to your service:
- Log in to the Fastly web interface and click the Configure link.
- From the service menu, select the appropriate service.
- Click the Configuration button and then select Clone active. The Domains page appears.
- Click the VCL Snippets link. The VCL Snippets page appears.
Click Create Snippet. The Create a VCL snippet page appears.
- In the Name field, type an appropriate name (e.g.,
Pass All Requests).
- From the Type controls, select within subroutine.
- From the Select subroutine menu, select recv (vcl_recv).
In the VCL field, add the following condition:
- Click Create to create the snippet.
- Click the Activate button to deploy your configuration changes.
All requests will continue to be passed until you remove return(pass); from vcl_recv in your VCL or you delete this snippet.Back to Top