what do you mean by cache invalidation ? it's about Gc and memory managment ?

I have set up a redis cache that can cache files into redis memory, but I am looking for something that can notify my servers whenever the files has been edited and delete it from the cache so my servers would stop getting outdated files from cache memory. Does that make sense to you?

you have to set your servers a better way.
It's kind of full copies...
a sort by Date ? or by Version of files could stand as a solution ?
ospf protocol uses a list about IPs and Paths, sometimes refreshing... and renewing... LDAP ??
LDAP have great 'behavior' for lists and mutlicast of resources

as I think the problem was 'memory space', I have wrote all that ... I keep it here.
what are ceil and floor about your memories usage ?
during sessions ( for one ? more ? )
looks for ceil creators, here are codes to rewrite,
or to balance through a secondary Thread...
or a Task to destroy when work is done.
Gc is member of resources, so auto-completion and its package will show some tools
see what "= Nothing" does as a endpoint for var like Objects ( but wide ones ), it's strict memory use and syntax.
.Net is great thing, but automation about memory ends when Gc is under efficiency.. ( Gc my best and worst ennemy )
really cross to full oop, it's about allocation and fast access, so is the .Net structured and favorite.
a simple pattern :
// start of a loop
initiate
do
destroy
// end of the loop
It works with var and objects ( all in ) too
It's about reducing memories involved, Threads have a max amount of all too
keep on scrutating the 0 down line of CPU / Ram ...
a mountain appears ? and stay as high rate and uses...
put it down, really.
considers 'work size in Go / Mo / Ko'.
Once load, once unload.