Merge pull request #14 from Lepidopterist/master

Clarify some settings. here be dragons etc.

Author: Lepidopterist

.env

@@ -5,7 +5,7 @@
 USE_GENERIC_CACHE=true
 
 ## IP addresses that the lancache monolithic instance is reachable on
-## Specify one or more IPs, space separated - these will be used when resolving DNS hostnames through lancachenet-dns. Multiple IPs can improve cache priming performance for some services (e.g. Steam)## IP Address that the lancache monolithic instance will run on
+## Specify one or more IPs, space separated - these will be used when resolving DNS hostnames through lancachenet-dns. Multiple IPs can improve cache priming performance for some services (e.g. Steam)
 ## Note: This setting only affects DNS, monolithic and sniproxy will still bind to all IPs by default
 LANCACHE_IP=10.0.39.1
 
@@ -19,14 +19,17 @@ UPSTREAM_DNS=8.8.8.8
 ## Note that by default, this will be a folder relative to the docker-compose.yml file
 CACHE_ROOT=./lancache
 
-## Change this to customise the size of the memory cache (default 500m)
-CACHE_MEM_SIZE=500m
-
 ## Change this to customise the size of the disk cache (default 1000000m)
 ## If you have more storage, you'll likely want to increase this
 ## The cache server will prune content on a least-recently-used basis if it
-## starts approaching this limit
+## starts approaching this limit.
+## Set this to a little bit less than your actual available space 
 CACHE_DISK_SIZE=1000000m
 
+## Change this to customise the size of the nginx cache manager (default 500m)
+## DO NOT CHANGE THIS LIGHTLY. The defaults are enough to address 8TB of cache storage.  Increasing
+## this value will cause performance problems, and may cause the cache to fail to start entirely.
+CACHE_MEM_SIZE=500m
+
 ## Change this to limit the maximum age of cached content (default 3650d)
-CACHE_MAX_AGE=3650d
+CACHE_MAX_AGE=3650d