On Apr 16, 2013, at 6:57 AM, Simon Majou <[email protected]> wrote: > Resurrecting this topic ... > > I think there is a real use case for node for shared memory. Because TCP > connections are great but will always be slower than direct access to memory. > > To avoid any concurrency issue shared memory should be writable only by one > process. When using the cluster module, the shared memory should be writable > only by the master for example. If you want to write from a worker, just send > a message, and the master will do it. > > > On Thursday, August 12, 2010 8:24:30 AM UTC+2, Ohad wrote: > I have few processes of Node, > What is the best practice of sharing memory between those processes ?
I'd love to see cross-platform memory mapping in libuv with a JavaScript API in Node… but mostly because I'm hesitant to offer cross-platform native modules at this time. I still have issues getting the right ducks in a row to do a Windows compilation, so I feel bad asking others to do the same. Right now, the best memory mapping module I've seen is MappedBuffer[1] (See this PR[2] for v0.10 support). It delegates async operations to a thread using uv_queue_work (something the node-mmap module does not do). The module only works on POSIX systems, unfortunately. It would be great to have cross-platform support, but I'm not sure how easy it is to create a common API over both POSIX and Windows-based systems. I've been working on an all-JavaScript key-value store named Medea[3]. My initial experiment with memory mapping immutable files for the key-value store was very promising[4]. I'm still hacking on Medea, but the end goal is to use it as Web cache storage for an HTTP reverse proxy (which I am also still hacking on). This effort won't come close to touching something like Varnish without legit memory mapping, I'm afraid (not that it has to, but it would be pretty cool). I'm down for spending some cycles on a native module, but I'd likely need some assistance as I have a ton of conflicting priorities at the moment. :) [1] https://github.com/kazupon/node-mappedbuffer [2] https://github.com/kazupon/node-mappedbuffer/pull/1 [3] https://github.com/argo/medea [4] https://github.com/argo/medea/issues/10 Cheers, -- Kevin Swiber @kevinswiber https://github.com/kevinswiber -- -- Job Board: http://jobs.nodejs.org/ Posting guidelines: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines You received this message because you are subscribed to the Google Groups "nodejs" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en --- You received this message because you are subscribed to the Google Groups "nodejs" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
