Add Ion to your Ion property to improve HTML page load performance. It syncs with Akamai real user monitoring to gather navigation and resource timing data and stores that data in a policy that's associated with your hostname. As requests for your hostname continue, policy data is gathered and reviewed to identify key resources. This allows Adaptive Acceleration to provide these resources to an end user's browser ahead of time, reducing the load and render time for your web pages.
This walks you through the steps you'll need to follow to set up this recommended feature.
Before you can configure Adaptive Acceleration, you need to do a few things:
Your Ion property needs to be secure. You need to define property hostnames that connect the end user to the Akamai edge securely via HTTPS. You can use any of the secure methods Akamai offers: Enhanced TLS, Standard TLS, or the Akamai shared certificate.
Enable a beacon source. Timing data is collected in "beacons" and sent to a source—a real user monitor. Adaptive Acceleration needs to communicate with the real user monitor to get this data. You can select from two: mPulse or Real User Monitor (Classic). To take advantage of all of the features Adaptive Acceleration offers, use the mPulse RUM sub-rule to set it up. It's included in your Ion property by default.
You need HTTP/2. The HTTP/2 behavior is automatically included in the Accelerate delivery rule. It doesn't require any configuration. Just ensure it stays in your Ion property if you want access to all of the functionality Adaptive Acceleration offers.
Are you participating in the HTTP/3 Beta?
If you are, Adaptive Acceleration is supported with HTTP/3. Review the HTTP/3 Support (Beta) documentation to get it set up properly and understand any caveats that apply to its use.
- Get access to the Adaptive Acceleration interface in Akamai Control Center (Optional). This interface lets you view policies of navigation and resource timing data that have been gathered for use with the Automatic Push, Preconnect, and Font Preload services. You can also use it to reset the data gathering mechanism. You need to have a Control Center account that's been granted access to this interface. If you're not sure, talk to your local Akamai admin, or contact your Akamai account team.
Adaptive Acceleration is added by default to the Accelerate delivery sub-rule in your property.
To start, set Beacon Data Source to mPulse.
This includes the Automatic Server Push, Automatic Preconnect, and Automatic Font Preload options. They provide optimizations using the beacon data gathered from mPulse. The data is used to create policies that leverage Akamai's learning engine. These policies can help improve site performance by determining what resources and connections visitors to pages on your site or app will need. The hints and optimizations included in the policy are sent to the browser as soon as it requests a page.
As a recommended best practice, all of these options are enabled by default in your Ion property.
Here's how these features interact with mPulse and Adaptive Acceleration:
When you set up Automatic Push, Preconnect, and Font Preload on your property, Adaptive Acceleration starts producing optimizations based on how users visit your site.
Adaptive Acceleration analyzes the data for the most-visited pages on your site. It identifies the resources and resource domains on the critical rendering paths for those pages and creates a policy.
When subsequent end users request a page in the policy, Adaptive Acceleration sends resources and establishes anticipated connections while the browser is waiting for a response.
Mobile and desktop browsers handle resources differently. So, Automatic Server Push creates separate entries on the policy for each. Automatic Server Push determines which of these entries to use, based on the device's user agent.
This example shows how Automatic Server Push reduces the number of resource requests needed to display a page's content. Assume that the page
www.sportsmemorabilia.com/shop/ includes these resources:
Every visit to that page prompts the end user's browser to submit a separate request for each of those four resources. After sampling some requests for that page, mPulse gathers enough data to determine that those resources "belong" to that page. Akamai then adds an Automatic Server Push entry to the policy: When you receive the initial request for
www.sportsmemorabilia.com/shop/, automatically send these four resources to the browser.
This lets browsers anticipate what connections the site needs, and establishes those connections ahead of time. But, it doesn't actually load or request anything.
This example shows how Automatic Preconnect establishes connections ahead of time. Assume the page
www.moviememorabilia.com/shop/ contains the following resource URLs:
Every visit to that page prompts the user's browser to establish a second connection to
images.moviememorabilia.net. After sampling some requests for that page, mPulse gathers enough data to determine that
www.moviememorabilia.com/shop/ requires a connection to
images.moviememorabilia.net. Adaptive Acceleration then adds an Automatic Preconnect entry to the policy: When responding to requests for
www.moviememorabilia.com/shop/, tell the browser to establish a connection to the images hostname as soon as it receives the page's HTML.
This lets browsers preload the fonts they'll need before they fetch and processes other resources. Beacon data from mPulse is used to identify the font requests made by the pages on your site. Font Preload uses this information to add browser-specific preload headers to each font. Once a preload header has been applied, the font will be ready to download before the browser has fully rendered the page.
This example shows how Automatic Font Preload is used to load fonts before other resources are fully processed. Assume the page
www.musicmemorabilia.com/shop/ uses the following fonts:
Every visit to a page prompts the user's browser to submit a separate request for each of the three fonts. After examining user requests for the page, the Adaptive Acceleration learning engine gathers enough data to determine that those fonts "belong" to that page. Adaptive Acceleration adds an Automatic Font Preload entry to the policy: When responding to requests for `www.moviememorabilia.com/shop/, tell the browser to start loading the font resources before it fetches and processes resources referencing the fonts.
In addition to the compression offered by Adaptive Acceleration, there are other ways to set up compression in your Ion property. Before you apply it here, take a look at this table to see how all of the available methods stack up.
|Compression method||Where the compression is applied||Additional information|
Brotli Compression (Beta)
On the edge network.
You can enable this here in the Adaptive Acceleration rule. Brotli Compression looks to resolve several interoperability issues seen with Resource Optimizer. It automates the compression and delivery of
On the edge network.
You can enable this here in the Adaptive Acceleration rule. It automates the compression and delivery of your
On your origin server.
You need to add a separate behavior to include this support.
This behavior serves compressed resources to requesting browsers. The resources need to be Brotli-compressed on your origin. So this doesn't offer dynamic compression, while Brotli Compression and Resource Optimizer do. If you know that all of your
Last Mile Acceleration
On the edge network.
This behavior is included in the Minimize payload rule that's automatically included in your Ion property. It automates the compression of various file types to gzip. The following apply to its use:
To enable this, set its slider to On. If you also have access to Brotli Compression, set it to Off. You can't use both.
Resource Optimizer compresses
During the compression, Resource Optimizer sets the downstream TTL of the file to 900 seconds (15 minutes).
Resource Optimizer serves compressed, cached content on HTTP 200 responses to a request. Both the original and the optimized resources are served under the same cache key:
Before you save your property and enable it on any Akamai network, you need to apply a few more settings in your Ion property to ensure it's compatible with Resource Optimizer.
- You want to use Caching with a Maxage of at least an hour. This applies to the Caching behavior in the Offload Origin rule. Use any of the settings to enable caching—Cache, Honor origin Cache-Control and Expires, Honor origin Cache-Control, or Honor origin Expires— and set its "maxage" field to at least one hour.
There are several other caching-related sub-rules in the Offload Origin rule, too.
- Other static objects
They're used to override the generic Caching maxage for these specific file types, based on recognized best practices. They all include a default maxage in excess of one hour. For best results with Resource Optimizer, keep these maxage settings as is.
Only use Resource Optimizer for GET requests. It should only initiate compression and serve compressed content for requests that use the GET method.
Ensure the Cache-Control header doesn’t contain a private directive. The
Cache-Controlheader on your origin server can be used determine how caching should be applied. You can add the
Privatedirective to it to block the caching of personally identifiable information (PII). This header can't contain this directive if you want to use Resource Optimizer. You can apply this as a setting when configuring Downstream Cacheability.
In most cases, Resource Optimizer provides the compression that you need. But, you might see this slider here, instead. It's available in special circumstances to offer additional support. It includes all of the features of Resource Optimizer, but addresses some additional issues:
It helps to prevent 404 errors from Resource Optimizer back-end requests in Akamai traffic reports.
It can help if you've set the resource Time To Live on your origin server using honor cache control headers.
It can help optimize the final resource when using redirects.
This feature is only available to customers who have signed up for its beta program. Talk to your account team to see if you're eligible to participate.
Set its slider to On, and ensure that Resource Optimizer is set to Off. You can't use both.
Brotli Compression targets text-based content. Compressible content is identified in the
Content-Type header of the metadata, or by the file extension. It returns Brotli-encoded responses to compatible browsers for resources with
.svg file extensions. It also returns Brotli-encoded responses for the following content-types:
Adaptive Acceleration isn't compatible or has known issues with other features offered in Property Manager.
These points address potential incompatibilities with Adaptive Acceleration as a whole.
Automatic Push, Preconnect, and Font Preload
For the Beta release, Brotli compression may not be performed if these features also apply to the request:
If any of these incompatibilities exist, you don't need to turn off Brotli Compression or any of the incompatible features. If an incompatibility is discovered, gzip or uncompressed resources are served instead.
With your property live and mPulse enabled as your beacon data source, give it some time to gather data. Data for the Automatic Push, Automatic Preconnect, and Automatic Font Preload settings is gathered and stored in a "property report." This report is used to determine "high usage" assets for your site or app, for use with Adaptive Acceleration.
Akamai offers additional services you can use with Adaptive Acceleration.
You can use these tools to interact with the beacon data collected in the policies for the Automatic Push, Preconnect, and Font Preload features.
View the policy data. See what Adaptive Acceleration has identified in your policies for early delivery. The Adaptive Acceleration interface on Akamai Control Center also lets you view warnings and event logs for the policy for troubleshooting.
Reset the policy. If you've changed your site or you don't want to wait for earlier data to drop out of the analysis, you can manually reset the data gathering mechanism.
Check out the mPulse reports to access monitoring and reporting tools for beacon data used by Adaptive Acceleration. If you're using the Real User Monitoring (Classic) application, you can access its reports documentation.
Updated 20 days ago