Using Threads to Structure the Proxy Server

network driver

HTTP request handler

disk driver

scrubber

stats

object cache manager

distill

encrypt

logging

long-term periodic threads

gather statistics

“scrub” cache for expired (old) objects

worker threads for specific objects

distiller compresses/shrinks images

encrypt/decrypt

device controller threads

logging thread

one thread for each disk

one thread for network interface

server threads

request handlers