I know that string pools are associated with processes. And it will be recycled when the owner process exits or an application domain is unloaded.
But I wonder if an application is long running, will the string pool leak memory?
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Only if you abuse `String.Intern()`. The [notes about performance](https://learn.microsoft.com/en-us/dotnet/api/system.string.intern?redirectedfrom=MSDN&view=netframework-4.7.2#performance-considerations) tell you all you need to know. – spender Sep 23 '18 at 00:26
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The short answer is no. No general-use programming construct will unless it has a bug or was designed by complete morons. (Or unless you're using it wrong, which takes some work in a GC language. – zzxyz Sep 23 '18 at 01:43
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@spender Even if someone don't use `String.Intern()` and simply write `string A="Z"; string B="Z";` still there are only one object in string pool with value "Z" and hence it seems that it still only released when CLR terminates. – Masoud Keshavarz Sep 23 '18 at 09:25
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In addition it seems that to prevent interning using CompilationRelaxationsAttribute is vital. https://learn.microsoft.com/en-us/dotnet/api/system.runtime.compilerservices.compilationrelaxationsattribute?view=netframework-4.7.2 – Masoud Keshavarz Sep 23 '18 at 09:33