I'm highly interested in incorporating cluster mode for load balancing my node.js application. However, I've been unable to locate any reliable documentation regarding potential adjustments needed for running in cluster mode. Do you have any insights on whether special modifications should be made to the code? I anticipate that all node endpoints will still be executed atomically, but haven't come across any specific information on this matter.
It is unlikely that any significant differences in the code execution would occur, especially considering that process management tools like pm2 have less influence on this compared to the operating system and hardware.
To utilize pm2's cluster mode, there is no need to make any changes to your code. Simply use the -i flag and set it to the desired number (typically matching the available physical CPUs on your system). For instance, you can execute
pm2 start --name MyApp -i $(nproc)If you use var cluster = require('cluster'), you have the ability to adjust the schedulinglink method by modifying cluster.schedulingPolicy. You can set it to cluster.SCHED_RR for Round Robin scheduling or cluster.SCHED_NONE to rely on the operating system's choice of scheduling.
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