Trust the OS, and don't use 70's technique like separating RAM and disk. Here's a really interesting piece on how PHK built varnish by using "modern" software t

Trust the OS, and don't use 70's technique like separating RAM and disk. Here's a really interesting piece on how PHK built varnish by using "modern" software techniques: https://www.varnish-cache.org/trac/wiki/ArchitectNotes https://www.varnish-cache.org/trac/wiki/ArchitectNotes And here's a Key-Value db you can use in your own programs that reuses the same idea, ie ask the OS for some space, trust it for RAM/Disk allocation; it turns out it is excellent at what it does thanks to careful design: http://symas.com/mdb/ http://symas.com/mdb/