---
name: "desync-cache"
section: "1"
platform: "linux"
package: "desync"
version: "1.1.5-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/desync-cache"
---

# desync-cache(1)

Read indexes and copy the referenced chunks

## NAME

desync-cache - Read indexes and copy the referenced chunks

## SYNOPSIS

**desync cache \<index\> \[\<index\>...\] \[flags\]**

## DESCRIPTION

Read chunk IDs from one or more index files (caibx or caidx) and copy the referenced chunks from the source store(s) into the target store given with -c, without assembling any blob on disk. This can be used to pre-populate a cache, or to replicate the chunks referenced by indexes into another store. Use '-' to read (a single) index from STDIN.

To exclude chunks that are known to exist in the target store already, use --ignore \<index\> which will skip any chunks from the given index. The same can be achieved by providing the chunks in their ASCII representation in a text file with --ignore-chunks \<file\>.

## OPTIONS

**--ca-cert**=""\
 	trust authorities in this file, instead of OS trust store

**-c**, **--cache**=""\
 	target store the chunks are copied to

**-r**, **--cache-repair**\[=true\]\
 	replace invalid chunks in the cache from source

**--client-cert**=""\
 	path to client certificate for TLS authentication

**--client-key**=""\
 	path to client key for TLS authentication

**-n**, **--concurrency**=10\
 	number of concurrent goroutines, -1 to let desync choose: the number of CPUs for chunking and hashing, adapting to each store up to 128 for transfers

**-e**, **--error-retry**=3\
 	number of times to retry in case of network error

**-b**, **--error-retry-base-interval**=500ms\
 	initial retry delay, increases linearly with each subsequent attempt

**-h**, **--help**\[=false\]\
 	help for cache

**--ignore**=\[\]\
 	index(es) with chunks to be excluded

**--ignore-chunks**=\[\]\
 	text file with chunk IDs to be excluded

**-s**, **--store**=\[\]\
 	source store(s)

**-t**, **--trust-insecure**\[=false\]\
 	trust invalid certificates

## OPTIONS INHERITED FROM PARENT COMMANDS

**--config**=""\
 	config file (default $HOME/.config/desync/config.json)

**--digest**="sha512-256"\
 	digest algorithm, sha512-256 or sha256

**--verbose**\[=false\]\
 	verbose mode

## EXAMPLE

```
  desync cache -s http://192.168.1.1/ -c /path/to/local file.caibx
```

## SEE ALSO

**[desync(1)](/desync/1.md)**

## HISTORY

20-Oct-2026 Auto generated by spf13/cobra