Sharing memory amongst hypnotoad workers

[Veesh Goldman]

What are my options if I need all of my workers to share some bit of dynamic data? Let's say there's some counter that needs to be incremented every time something happens, but is only relevant while the app is running. Do I need to use a DB for that, or Redis or memcached, or is there something built in to help with that.

I'm assuming that the memory isn't shared because the process forks to make the workers.

Thanks

[Илья Рассадин]

Hi!

As you said, you can use any type of external database.

If you're looking for something more simple - try Cache::FastMMap.

The only way to do that without external modules (just perl core + Mojolicious) I can think of is a file, but you need to use some locking mechanism like flock.

If you can use external modules - it's better to do that. If you need persistent storage - using external database like Redis is probably the most appropriate solution.

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[Dan Book]

Note SQLite with Mojo::SQLite is an option for an external database that doesn't require setting up any other server, if you won't have heavy load.

-Dan

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