Use cache If there are a lot of objects to be allocated and released frequently, you can use cache techinique to record released objects, and reuse them in future.
Be careful: - You must set a capacity that at most the specified number of objects can be recorded in cache; otherwise, cache will consume to many memory. - You must design a policy to release some/all cached objects when system is in low memory.
Use chunk If you need a buffer to append/remove elements frequently, you can split the buffer to multiple chunks. more details, please refer to another thread 'Buffer design'.
