Key | Default | Type | Description
--- | --- | --- | ---
##### state.backend.forst.metrics.actual-delayed-write-rate | false | Boolean | Monitor the current actual delayed write rate. 0 means no delay.
##### state.backend.forst.metrics.background-errors | false | Boolean | Monitor the number of background errors in ForSt.
##### state.backend.forst.metrics.block-cache-capacity | false | Boolean | Monitor block cache capacity.
##### state.backend.forst.metrics.block-cache-hit | false | Boolean | Monitor the total count of block cache hit in ForSt (BLOCK_CACHE_HIT == BLOCK_CACHE_INDEX_HIT + BLOCK_CACHE_FILTER_HIT + BLOCK_CACHE_DATA_HIT).
##### state.backend.forst.metrics.block-cache-miss | false | Boolean | Monitor the total count of block cache misses in ForSt (BLOCK_CACHE_MISS == BLOCK_CACHE_INDEX_MISS + BLOCK_CACHE_FILTER_MISS + BLOCK_CACHE_DATA_MISS).
##### state.backend.forst.metrics.block-cache-pinned-usage | false | Boolean | Monitor the memory size for the entries being pinned in block cache.
##### state.backend.forst.metrics.block-cache-usage | false | Boolean | Monitor the memory size for the entries residing in block cache.
##### state.backend.forst.metrics.bloom-filter-full-positive | false | Boolean | Monitor the total count of reads not avoided by bloom full filter.
##### state.backend.forst.metrics.bloom-filter-full-true-positive | false | Boolean | Monitor the total count of reads not avoided by bloom full filter and the data actually exists in ForSt.
##### state.backend.forst.metrics.bloom-filter-useful | false | Boolean | Monitor the total count of reads avoided by bloom filter.
##### state.backend.forst.metrics.bytes-read | false | Boolean | Monitor the number of uncompressed bytes read (from memtables/cache/sst) from Get() operation in ForSt.
##### state.backend.forst.metrics.bytes-written | false | Boolean | Monitor the number of uncompressed bytes written by DB::{Put(), Delete(), Merge(), Write()} operations, which does not include the compaction written bytes, in ForSt.
##### state.backend.forst.metrics.column-family-as-variable | false | Boolean | Whether to expose the column family as a variable for ForSt property based metrics.
##### state.backend.forst.metrics.compaction-pending | false | Boolean | Track pending compactions in ForSt. Returns 1 if a compaction is pending, 0 otherwise.
##### state.backend.forst.metrics.compaction-read-bytes | false | Boolean | Monitor the bytes read during compaction in ForSt.
##### state.backend.forst.metrics.compaction-write-bytes | false | Boolean | Monitor the bytes written during compaction in ForSt.
##### state.backend.forst.metrics.cur-size-active-mem-table | false | Boolean | Monitor the approximate size of the active memtable in bytes.
##### state.backend.forst.metrics.cur-size-all-mem-tables | false | Boolean | Monitor the approximate size of the active and unflushed immutable memtables in bytes.
##### state.backend.forst.metrics.estimate-live-data-size | false | Boolean | Estimate of the amount of live data in bytes (usually smaller than sst files size due to space amplification).
##### state.backend.forst.metrics.estimate-num-keys | false | Boolean | Estimate the number of keys in ForSt.
##### state.backend.forst.metrics.estimate-pending-compaction-bytes | false | Boolean | Estimated total number of bytes compaction needed to rewrite to get all levels down to under target size. Not valid for other compactions than level-based.
##### state.backend.forst.metrics.estimate-table-readers-mem | false | Boolean | Estimate the memory used for reading SST tables, excluding memory used in block cache (e.g. filter and index blocks) in bytes.
##### state.backend.forst.metrics.is-write-stopped | false | Boolean | Track whether write has been stopped in ForSt. The metric will return 1 if write has been stopped, 0 otherwise.
##### state.backend.forst.metrics.iter-bytes-read | false | Boolean | Monitor the number of uncompressed bytes read (from memtables/cache/sst) from an iterator operation in ForSt.
##### state.backend.forst.metrics.live-sst-files-size | false | Boolean | Monitor the total size (bytes) of all SST files belonging to the latest version. WARNING: may slow down online queries if there are too many files.
##### state.backend.forst.metrics.mem-table-flush-pending | false | Boolean | Monitor the number of pending memtable flushes in ForSt.
##### state.backend.forst.metrics.num-deletes-active-mem-table | false | Boolean | Monitor the total number of delete entries in the active memtable.
##### state.backend.forst.metrics.num-deletes-imm-mem-tables | false | Boolean | Monitor the total number of delete entries in the unflushed immutable memtables.
##### state.backend.forst.metrics.num-entries-active-mem-table | false | Boolean | Monitor the total number of entries in the active memtable.
##### state.backend.forst.metrics.num-entries-imm-mem-tables | false | Boolean | Monitor the total number of entries in the unflushed immutable memtables.
##### state.backend.forst.metrics.num-files-at-level | false | Boolean | Monitor the number of files at each level.
##### state.backend.forst.metrics.num-immutable-mem-table | false | Boolean | Monitor the number of immutable memtables in ForSt.
##### state.backend.forst.metrics.num-live-versions | false | Boolean | Monitor number of live versions. Version is an internal data structure. See ForSt file version_set.h for details. More live versions often mean more SST files are held from being deleted, by iterators or unfinished compactions.
##### state.backend.forst.metrics.num-running-compactions | false | Boolean | Monitor the number of currently running compactions.
##### state.backend.forst.metrics.num-running-flushes | false | Boolean | Monitor the number of currently running flushes.
##### state.backend.forst.metrics.num-snapshots | false | Boolean | Monitor the number of unfinished snapshots of the ForSt.
##### state.backend.forst.metrics.size-all-mem-tables | false | Boolean | Monitor the approximate size of the active, unflushed immutable, and pinned immutable memtables in bytes.
##### state.backend.forst.metrics.stall-micros | false | Boolean | Monitor the writer wait duration for compaction or flush to finish in ForSt.
##### state.backend.forst.metrics.total-sst-files-size | false | Boolean | Monitor the total size (bytes) of all SST files of all versions. WARNING: may slow down online queries if there are too many files.