LogoLogo
  • Welcome
  • Landing in Transparent Edge
  • Sign up process
  • Getting Started
    • Basics concepts
      • Glosary
        • API
        • Brotli Compression
        • Cache-Control
        • Cache key
        • Caching
        • CNAME
        • Cloud Computing
        • Cloud Computing Architecture
        • Cloud Services
        • DASH
        • Data Center
        • Edge Server
        • ETag
        • GSLB
        • HLS (HTTP Live Streaming)
        • HTTP/2
        • Infrastructure as a Service (IaaS)
        • Internet Exchange Point
        • Last-Modified
        • Load Balancing
        • MultiCDN
        • NoSQL (not only SQL)
        • Origin
        • Origin Shield
        • OTT (Over The Top)
        • Platform as a Service (PaaS)
        • PoP (Point of Presence)
        • Private CDN
        • Private Cloud
        • Public Cloud
        • Purge
        • Query String
        • Reverse Proxy
        • RTT (Round-trip Time)
        • SaaS (Software as a Service)
        • SDS (Software Defined Storage)
        • Smooth Streaming
        • Status Code
        • TCP (Transmission Control Protocol)
        • TLS Acceleration
        • TLS (Transport Layer Security)
        • TTFB (Time-to-first-byte)
        • TTL (Time-to-live)
        • Virtual Machine
        • VPS (Virtual Private Server)
        • Web Services
      • Let's start at the beginning
      • Things to consider
      • Houston, we have a problem
      • HTTP, How does it work?
      • Invalidating methods
      • DNS Pointing
      • Log formats
      • Predefined headers
      • Default headers
        • geo_country_code
        • X-Device
        • Vary
        • Cache headers
        • Age
        • TP-Cache
        • True-Client-IP and X-Forwarded-For
      • Forcing No-Cache
      • Architecture
        • Transparent Edge’s IP addresses
        • Locations and PoP
        • Cache layers
      • Cache effectiveness
      • SSL
      • HTTP 5xx Error Codes
      • Features
        • Protection against origin failures
        • Rate Limit
        • Geolocation and geoblocking
        • Prefechting
        • Refetching
        • Fast purging
        • HTTP Redirects
        • Caching static vs. dynamic objects
        • Rewriting of headers
        • Device detection
    • Dashboard
      • Historic
      • Analytics
      • Invalidating content
      • Content invalidation by tags
      • Prefetching Cache
      • Log shipping
      • Provisioning
        • Initial configuration
        • Backends
        • Sites
        • Configuration deployments
        • Network ACLs
        • TLS/SSL Certificates
      • User management
  • Configuration
    • VCL Reference
      • Default Functions
      • VCL Objects
      • Callable Functions
      • Security restrictions
      • Varnish book
    • Network Access Control List
      • Initial configuration
      • Auto generated lists
      • Manage lists via API
    • i3
      • Quality adjustment
      • Cache timing allocation for transformed images
      • Conversion to grayscale
      • Conversion to WebP
      • Blurring
      • Inclusion of graphics in the footer (strip)
      • Automatic resizing
      • Definition of the maximum size (content-length)
    • Transcoding
      • Relaunch or requeue jobs
      • Create a transcode job
      • Get job information
      • Dashboard usage
    • OpenAPI de TransparentCDN
  • Security
    • HTTPS
    • Blocking User-Agent
    • Blocking by IP Address
    • Blocking Requests Geographically
    • Avoiding Hotlinking
    • Bot Mitigation
    • WAF
      • Configuration
      • CAPTCHA
      • Content protected by token
      • Rate limit
    • Anomaly Detection
      • Detection Types
      • Automatic Reactions
      • Detection History
    • Under attack mode
    • Global Whitelists
  • Integrations
    • Wordpress plugin
    • Google Cloud Platform
    • Amazon Web Services
  • GUIDES AND TUTORIALS
    • How to do things
    • Edge Computing
      • ESI Tags
    • Acting on the Query String
    • Working with cookies
    • Making decisions based on HTTP headers
    • Web Application Gateway
    • Configure your servers to send cache headers
    • Caching a version per device
    • True-Client-IP in the origin
    • A/B Testing
    • Routing traffic to different backends
    • JSON Web Tokens
    • Debug codes
    • Streaming logs
    • API
      • Authentication
      • Invalidation
Powered by GitBook
On this page

Was this helpful?

Export as PDF
  1. Getting Started
  2. Basics concepts
  3. Features

HTTP Redirects

PreviousFast purgingNextCaching static vs. dynamic objects

Last updated 1 year ago

Was this helpful?

Redirect to HTTPS

When your website runs with SSL, it’s typical to want everything that comes in unencrypted via HTTP to be sent to the secure version to make sure nobody is browsing your website insecurely. To do so, you just have to call redirect_https.

 sub vcl_recv {  
     if (req.http.host == "www.transparentcdn.com") {
         call redirect_https;
     }
}

Redirects 301 and 302

Redirects can be performed by calling the function `redirect_request`, see .

sub vcl_recv {
    # 301
    if (req.http.host == "example.com" && req.url ~ "^/old-section") {
        # req.http.tcdn-location header is required for this call to work.
        set req.http.tcdn-location = "301, https://www.example.com/new-section/";
        call redirect_request;
    }

    # 302
    if (req.http.host == "example.com" && req.url == "/") {
        set req.http.tcdn-location = "302, https://www.example.com/es/";
        call redirect_request;
    }
}

It’s important to understand the implications of the two types of redirects. A 301 is a redirect that, in theory, isn’t going to change, so it gets cached in browsers. If it does eventually change, it’s very complicated to un-cache that resource.

A 302, meanwhile, is a temporary redirect for a resource, so it’s not cached in browsers or intermediate proxies.

callable functions