Get statistics about the shared cache for partially mounted indices.
Required authorization
- Cluster privileges:
manage
GET
/_searchable_snapshots/cache/stats
curl \
--request GET 'http://api.example.com/_searchable_snapshots/cache/stats'
Response examples (200)
A successful response from `GET /_searchable_snapshots/cache/stats`.
{
"nodes" : {
"eerrtBMtQEisohZzxBLUSw" : {
"shared_cache" : {
"reads" : 6051, // The number of cache region read operations. If reads > writes, the difference represents requests successfully served from the cache without accessing the snapshot repository.
"bytes_read_in_bytes" : 5448829,
"writes" : 37, // The number of cache region write operations. If reads == writes, every request required fetching data from the snapshot repository into the cache.
"bytes_written_in_bytes" : 1208320,
"evictions" : 5, // The number of cache region evictions. A low eviction count indicates the cache is effectively serving requests. Use this metric to evaluate cache sizing.
"num_regions" : 65536,
"size_in_bytes" : 1099511627776,
"region_size_in_bytes" : 16777216 // The size of each cache region. A region is a contiguous byte range stored on local disk.
}
}
}
}