CloudHub object store should be in same region where the Mule application is deployed. This will
give optimal performance.
Before learning about Cache scope and object store in Mule 4 we understand what is in general
Caching is and other related things.
WHAT DOES “CACHING” MEAN?
Caching is the process of storing frequently used data in memory, file system or database which
saves processing time and load if it would have to be accessed from original source location every
time.
In computing, a cache is a high-speed data storage layer which stores a subset of data, so that future
requests for that data are served up faster than is possible by accessing the data’s primary storage
location. Caching allows you to efficiently reuse previously retrieved or computed data.
How does Caching work?
The data in a cache is generally stored in fast access hardware such as RAM (Random-access
memory) and may also be used in correlation with a software component. A cache’s primary purpose
is to increase data retrieval performance by reducing the need to access the underlying slower
storage layer.
Caching in MULE 4
In Mule 4 caching can be achieved in mule using cache scope and/or object-store. Cache scope
internally uses Object Store to store the data.
What is Object Store
Object Store lets applications store data and states across batch processes, Mule components, and
applications, from within an application. If used on cloud hub, the object store is shared between
applications deployed on Cluster.
Cache Scope is used in below-mentioned cases:
● Need to store the whole response from the outbound processor
● Data returned from the outbound processor does not change very frequently
● As Cache scope internally handle the cache hit and cache miss scenarios it is more readable
Object Store is used in below-mentioned cases:
● Need to store custom/intermediary data
● To store watermarks
● Sharing the data/stage across applications, schedulers, batch.
If CloudHub object store is in same region where the Mule application is deployed it will aid in fast
access of data and give optimal performance.
