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Extracting unique values from a list is a common problem and the goal is to do it in as little operations as possible. The memory used is negligeable and this can be done in linear time.
One of the biggest problems of running a web application for a long period of time is the storage of cached data that may no longer be in use but still be refered. There are multiple solutions for this, one of the most common one is to run some sort of deamon or thread that will clean up or simply flushing the cache after a certain amount of time. In this article we propose the use of a WeakHashMap.
One of the biggest problems of running a web application for a long period of time is the storage of cached data that may no longer be in use but still be refered. There are multiple solutions for this, one of the most common one is to run some sort of deamon or thread that will clean up or simply flushing the cache after a certain amount of time. In this article we propose the use of a WeakHashMap.
