“Smaller applications mean faster installs, caching enables the updating of resources after installation – two wins for the consumer. Read Enrique Ortiz's latest on improving the application experience.”
The article Implementing a Local Cache to Manage Resources builds upon previous articles Externalizing Resources – Persisting Images in RMS, and a simple method for Accessing a Resource over HTTP, to implement a local cache for images.
“MIDlet resources such as images, icons, video clips, and ringtones can be stored within the MIDlet suite JAR file. But keeping such resources within the MIDlet suite itself can be expensive in terms of application size. To minimize the size of the applications, resources can be download the first time the application runs, or just on-demand when needed using lazy initialization, storing such resources locally for later use. Using a resource cache not only hides where and how resources are found, downloaded, and stored, but it also results in lowering the overall MIDlet suite size. Another benefit is that resources can be updated on the field.”
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