sing-box/docs/configuration/experimental/cache-file.md

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---
icon: material/new-box
---
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!!! question "Since sing-box 1.8.0"
!!! quote "Changes in sing-box 1.9.0"
:material-plus: [store_rdrc](#store_rdrc)
:material-plus: [rdrc_timeout](#rdrc_timeout)
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### Structure
```json
{
"enabled": true,
"path": "",
"cache_id": "",
"store_fakeip": false,
"store_rdrc": false,
"rdrc_timeout": ""
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}
```
### Fields
#### enabled
Enable cache file.
#### path
Path to the cache file.
`cache.db` will be used if empty.
#### cache_id
Identifier in the cache file
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If not empty, configuration specified data will use a separate store keyed by it.
#### store_fakeip
Store fakeip in the cache file
#### store_rdrc
Store rejected DNS response cache in the cache file
The check results of [Address filter DNS rule items](/configuration/dns/rule/#address-filter-fields)
will be cached until expiration.
#### rdrc_timeout
Timeout of rejected DNS response cache.
`7d` is used by default.