# Dgraph caches configuration
**URL:** https://discuss.dgraph.io/t/dgraph-caches-configuration/18494
**Category:** Dgraph
**Tags:** kind:question, area:documentation, dgraph
**Created:** [April 12, 2023, 9:53pm UTC](https://discuss.dgraph.io/t/dgraph-caches-configuration/18494 "2023-04-12T21:53:13Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@alexeevaa](https://discuss.dgraph.io/u/alexeevaa)
#### Post date: [April 12, 2023, 9:53pm UTC](https://discuss.dgraph.io/t/dgraph-caches-configuration/18494/1 "2023-04-12T21:53:13Z")
I could not find any info on how to configure Dgraph caches.
There is cache size, cache percentages and three caches:
```auto
PostingListCache,PstoreBlockCache,PstoreIndexCache
```
As far as i can tell PostingListCache does not work at all, but worked in 21.12 on dgraph side.
In badger repo there is info on block cache:
>
Also here we can find something about index cache:
>
Seems like block cache stores decompressed parts of badger tables & index cache stores badger table indices. Both help to avoid reading from disc and doing related work. Still i have no clue how to adjust them. Are there any general rules? Like, what percentage of RAM should I use? What should I do to help writes over reads or vice versa?
---
### Author:  [@MichelDiz](https://discuss.dgraph.io/u/MichelDiz)
#### Post date: [April 12, 2023, 10:18pm UTC](https://discuss.dgraph.io/t/dgraph-caches-configuration/18494/2 "2023-04-12T22:18:18Z")
Like this
```auto
--cache "size-mb=1024; percentage=10,65,25;"
#PostingListCache 10%, PstoreBlockCache 65%, PstoreIndexCache 25%
```
In general size-mb should be half of the available RAM.
The defaults are
```auto
size-mb=1024; percentage=0,65,35;
```