Minimising ArangoDB memory use

Question

I have a number of different deployment situations for ArangoDB. One of which is on a users desktop machine or laptop.

I've read and implemented the instructions on how to run ArangoDB in Spartan Mode (very helpfull).

However, I need more. The desktop user may work with a number of different collections in the database and all of these stay loaded and consume a lot of virtual memory. This can cause some apps to behave differently if they detect they are running in a memory constrained environment.

So, I'm looking for a way to unload collections that haven't been accessed "recently" (some configurable amount of time).

Is there a (good) way to go about doing this?

Answer 1

For version 3.4 , I added the following params to arangod.conf to start it in so called spartan mode .

More details can be found at their blog post

[javascript]

# number of V8 contexts available for JavaScript execution. use 0 to 
# make arangod determine the number of contexts automatically.
v8-contexts = 1


[foxx]
# enable Foxx queues in the server
# Disable task scheduling - reduce CPU
queues = false


[wal]

# Reduce the number of historic WAL files which will reduce the memory usage when ArangoDB is in use.
historic-logfiles = 1

# Reduce the prepared WAL log files which are kept ready for future write operations
reserve-logfiles = 1

# In addition you can reduce the size of all WAL files to e.g. 8 MB by setting
logfile-size = 8388608