3 ms·

fork only works if the central cache never updates. Eg a cache of compiled bytecode for scripts gets filled as those scripts are requested. A cache of database

• lmm 7y ago
  It kind of goes both ways. If the data sharing pattern is simple then it's still quite simple to handle that at an inter-process level (e.g. perhaps you have to do cache updates via slower IPC, but if the cache updates only happen after the request has already been handled then they're not on the critical path. Or you might have the parent process handle the cache updates itself). If the data sharing pattern is complex and interleaved then it's hard to achieve with anything other than threads - but that's exactly the case that also makes it hard to avoid corrupting shared data.