Cover art for podcast Around IT in 256 seconds

Around IT in 256 seconds

31 EpisodesProduced by Tomasz NurkiewiczWebsite

Podcast for developers, testers, SREs... and their managers.I explain complex and convoluted technologies in a clear way, avoiding buzzwords and hype.Never longer than 4 minutes and 16 seconds.Because software development does not require hours of lectures, dev advocates' slide decks and hand waving… read more

4:15

#23: Garbage collection

Creating new objects, arrays or strings is so straightforward that we often forget what happens underneath. And I don’t mean trying to figure out what this refers to in JavaScript objects. I mean: memory management. On each request we create a ton of objects. A server can easily allocate hundreds of megabytes of memory. Per second. Memory is cheap and there’s a lot of it. But it’s not infinite. How come we can simply call new Object() over and over again, taking more and more memory from our computer? Many objects are no longer needed a few milliseconds after they’re created. What happens to the memory they occupy? We take for granted what was thought to be almost impossible: automatic memory management.

Read more: https://256.nurkiewicz.com/23

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