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by abalone
2644 days ago
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Nah, I’d say Swift’s good support for value type semantics helps cut down on leak problems. Depends on the patterns you use of course but I can see that being a good approach for server apps. Funny you say that because just this week there has been an investigation into what seemed to be “leaks” but turns out it’s memory fragmentation. It’s a fascinating read into how to debug a server problem if you’re into that sort of thing.[1] Agree that modern tracing GC can be very good in a wide range of cases but there are some where it’s not. Very dependent on the case. Ultimately you are deferring work and hoping to find some time in the future to squeeze it in unnoticed. ARC is a cool paradigm to explore on the server as it doesn’t have this problem to begin with. [1] https://forums.swift.org/t/memory-leaking-in-vapor-app/22209... |
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Memory fragmentation is another legit concern I guess, as far as I can remember iOS has no memory compaction. Again not a necessarily an issue for a short live user space application, it is a larger one than memory leaks at least at my company. In some hot spots of our app we specifically slow down reading of some queries to reduce memory fragmentation.
Frankly Chris Lattner's claim that a GC leads to 2x-3x memory consumption over ARC is unfounded and sorta shocking coming from someone held is such high esteem. It's something thats continually shown to be untrue.
It always seems Swift's biggest selling point is it uses ARC instead of a GC, which is either not a large issue or a GC is actually more beneficial. Other than that you still haven't dealt with the toxic "Swifty" community, the terrible tooling situation, the immature libraries and frameworks, etc, etc.
There seems to be so many better solutions to writing server side code. This is all coming from someone who uses the language on a daily basis.