... reserved.Non-Volatile Databases|545This topic is non-specific to mod_ perl and big enough to fill several books on itsown. A non-exhaustive list of the modules to look at includesIPC::SysV,IPC::Shareable,IPC::Semaphore,IPC::ShareLite,Apache::Session, ... multiprocess environ-ment where many processes may try to modify the same file simultaneously. This isthe case whether we are using mod_ perl or not.If we are using some flavor of Unix, the ... itsvalue, and when an object gets destroyed the value is decremented.Now imagine a server, such as mod_ perl, where the process can run for months oreven years without quitting. Doing this kind of...