planttheidea/micro-memoize

Infinite caching?

Offirmo opened this issue · 4 comments

Offirmo commented

Hi and thanks for the great lib! Greatly boosted my app which is built around immutability but has expensive computations.

How do we get an infinite caching? maxSize: Number.POSITIVE_INFINITY ?

planttheidea commented

That would be my recommendation! I used the same trick to provide infinite caching on moize (a wrapper around this library that handles more use-cases out of the box, but has a larger footprint).

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Offirmo commented

Thanks @planttheidea for the answer! So you're confirming it should work?

Or should one use Number.MAX_SAFE_INTEGER for safety?

planttheidea commented

To answer your second question, either one should be fine. Realistically speaking neither one will ever be hit, and practically speaking I would actually recommend a number that is not as absurdly high as the maximum safe integer but still pretty high (arbitrary choices ... 100? 500? 5000?) to cap on potential leaks. This was a driving factor to why moize changed its default cache size from Infinity to 1 in v6; infinite cache creates easy leaks unless you have tight controls. Take my opinion with a grain of salt, though. :)

But to answer your first question, Infinity should work just fine. If you have trouble, let me know your repro steps and I can check it out.

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Offirmo commented

Hi, thanks for the time and explanations!

FYI my use case is a command line tool doing a specific task. Once the task is done, the tool exits, so I don't mind such a "memory leak" for now.