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In an earlier post, I showed how to implement the “world’s simplest lock-free hash table” in C++. It was so simple that you couldn’t even delete entries or resize the table. Well, a few years have passed since then, and I’ve recently written some concurrent maps without those limitations. You’ll find them in my Junction project on GitHub. Junction contains several concurrent maps – even the ‘world’s simplest’ is there, under the name ConcurrentMap_Crude. For brevity, let’s call that one the Crud...