Queues are threadsafe - lists are not!

[shrewdlogarithm]

I made a comment on the article you originally posted this in but I thought I'd put this here too.

Whislt queues are - as you say - threadsafe, the array you're holding them in is NOT threadsafe...

Sooner or later you'll see "index out of range" errors - either when reading through (backwards) or deleting array elements...

Adding another exception to "ignore" this is probably fine - another thread just did the work - but it caught-me-out when I moved from the development to a proper 'threaded' webserver (it took many hours to happen - but then happened 10 times in a single day!!)

[MaxHalford]

Thanks for pointing this out! I didn't think about this when I wrote this back in 2020. I agree with what @neojaw mentions here, in that a lock should be used. I think that's cleaner than catching exceptions coming from race conditions.

I'll leave this issue open so people have an easier way finding it :)