daiyip

25 ms·

1. 1.▲
   by daiyip 9y ago

   Yes in common sense. But for node cluster's case, if we need to load a data set for a worker to serve request, it has to be loaded on each process. While the multi-threaded model will have only one copy.
2. 2.▲
   by daiyip 9y ago

   JXCore is based on node codebase, while Napa.js is written from scratch with multi-threading consideration at its core. We evaluated JXCore before starting Napa.js, but found easier to re-architecture to get performance and memory sharing r
3. 3.▲
   by daiyip 9y ago

   Since everything is in a single process, they can be shared via native structures. Each JS thread has its own heap, there will be a cost to transfer the shared native structures into JS object. For complex objects, usually JSON is used thus
4. 4.▲
   by daiyip 9y ago

   That's correct. Think about a scenario that each worker needs to access a 1GB hash map. In node cluster, we have to load this 1GB map per process, but in the same process, all JS threads can access the map via an addon.
5. 5.▲
   by daiyip 9y ago

   A key design goal is to make all workers within a zone symmetric, broadcasting/executing to specific workers is an anti-pattern. Please see: https://github.com/Microsoft/napajs/wiki/introduction#zone
6. 6.▲
   by daiyip 9y ago

   Here is why napajs is started: https://github.com/Microsoft/napajs/wiki/Why-Napa.js