Question 1

What is Application Accelerator?

Accepted Answer

Application Accelerator is an Applications module for accelerating web applications and APIs through protocol optimizations and advanced cache rules. It enables protocol optimization for dynamic content, Advanced Cache Key processing with query strings and cookies, POST and OPTIONS request caching, and short TTL support. The module reduces latency and improves throughput for data-intensive applications on Azion Web Platform.

Question 2

What is Advanced Cache Key?

Accepted Answer

Advanced Cache Key lets you control how content is segmented in cache beyond the URL path. You can configure cache variation rules based on query strings, cookies, and headers—enabling fine-grained control over which parameters differentiate cached objects. This supports up to 64 custom cache keys per edge application.

Question 3

Can I vary cached content by query string fields?

Accepted Answer

Yes. You can configure cache variation by specific query string fields using four modes: Whitelist (only listed fields considered), Blocklist (ignores specified fields), All fields (considers all variations), and Query String Sort (order becomes irrelevant). This lets you control exactly which parameters affect cache segmentation.

Question 4

Can I vary cached content by cookies?

Accepted Answer

Yes. You can configure cache variation by specific cookie names, which is useful for session-based or personalized content. Modes include: URL-based only, Whitelist (allowed cookies), Blocklist (exceptions), and All cookies. This enables content segmentation by user profiles, browsing sessions, access regions, and targeting needs.

Question 5

How do I apply cache settings in production?

Accepted Answer

Create cache settings in the Applications module, then activate them with Rules Engine rules. You can use request or response phase logic to decide when a cache policy should apply. This allows granular control over caching behavior based on URL patterns, headers, cookies, or other request attributes.

Question 6

Can I set short cache TTLs?

Accepted Answer

Yes. With Application Accelerator enabled, you can customize short cache TTL values, including immediate expiration. This is ideal for rapidly changing content and real-time applications that require near-instant cache invalidation.

Question 7

Can I cache POST or OPTIONS requests?

Accepted Answer

Yes. Application Accelerator enables caching for POST and OPTIONS requests, extending beyond the default GET and HEAD methods. When enabled, the request body becomes part of the cache key, so different payloads are cached separately. This is optimized for frequently accessed or data-intensive API endpoints.

Question 8

How does Application Accelerator compare to traditional CDN caching?

Accepted Answer

Traditional CDN caching typically supports only GET and HEAD requests with limited cache key customization. Application Accelerator provides protocol optimization for dynamic content, Advanced Cache Key with query string and cookie support, POST/OPTIONS caching, and short TTLs, all on a distributed architecture without cold starts. This enables caching strategies not possible with standard CDN configurations.

Question 9

What are the default TTL limits?

Accepted Answer

Default cache TTL limits include a configurable minimum and maximum range. You can choose values based on your content requirements, with short TTL support available when Application Accelerator is enabled.

Question 10

Does enabling Application Accelerator affect costs?

Accepted Answer

Application Accelerator is a premium module with usage-based pricing. Advanced cache features require the module to be active, and data transfer may generate additional costs depending on your configuration. Contact Azion support for specific pricing details based on your plan and expected usage.

Accelerate dynamic APIs and apps

Faster dynamic applications

Fine-grained cache control

Global acceleration without replatforming

Optimize dynamic delivery

Advanced Cache Key for personalized content delivery

From basic caching to advanced acceleration

See how to use

Accelerate REST and GraphQL APIs

Optimize product catalogs

Personalize multi-tenant apps

Stream content faster

Reduce API latency

Deliver personalized experiences

A full-stack platform that scales instantly

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