Cache Scope in Mulesoft

Boosting Performance: Understanding Cache Scope in MuleSoft

Cache Scope Overview:

Purpose: Stores and reuses frequently accessed data to enhance performance.

Benefits:

• Reduces processing burden on the Mule instance.
• Accelerates message processing within a flow.

Use Cases:

• Handling repetitive requests for the same information.
• Managing large, repetitive message payloads.

Cache Scope Process:

1. Message Entry: A message enters the Cache Scope.
2. Payload Check: The Cache Scope assesses if the message payload is non-repeatable (unsuitable for caching).
3. Key Generation: A unique key is generated to identify the message payload.
4. Cache Lookup: The Cache Scope compares the key to existing entries in the cache (default: InMemoryObjectStore).
   • Cache Miss:
     • If no matching key is found, the message is processed, and the response is stored in the cache using the generated key.
   • Cache Hit:
     • If a matching key is found, the caching strategy determines the response based on both the new request and the cached data.
5. Response Delivery: The Cache Scope delivers the response (processed or retrieved from the cache) back to the parent flow for further processing.

Observations:

First Request:

• The Cache Scope executes, processes the message, and stores the response in the InMemoryObjectStore.
• Variables within the flow are not cached by default.

Subsequent Requests:

• When the same request arrives again, the Cache Scope retrieves the response from the InMemoryObjectStore and returns it directly. This bypasses the original processing logic.

For the Same request, processing time reduces 499ms to 23ms, and variables are not stored in cache memory, only payload will be stored

Additional Points:

• Cache Configuration: Customize cache size, expiration time, and other settings to optimize performance.

• Custom Caching Strategies: MuleSoft enables the creation of custom caching strategies tailored to specific requirements.

• Cache Invalidation: Mechanisms are available to invalidate cached entries when underlying data changes.

By comprehending Cache Scope, you can significantly enhance the performance and scalability of your Mule applications.