Database Reference
In-Depth Information
Property
Default
Description
key_cache_save_period
14400
Key cache save duration (in seconds) save under
saved_caches_directory
.
Disabled.
By default disabled. All row keys will be cached.
key_cache_keys_to_save
0(Disabled)
In-memory row cache size.
row_cache_size_in_mb
row_cache_save_period
0(Disabled)
row cache save duration (in seconds) save under
saved_caches_directory
.
Disabled.
By default disabled. All row keys will be cached.
row_cache_keys_to_save
Available values are
SerializingCachePro-
vider
and
Concur-
rentLinkedHashCacheProvider. Seri-
alizingCacheProvider
is recommended in
case workload is not intensive update as it uses
native memory (not JVM) for caching.
row_cache_provider
SerializingCacheProvider
Periodic
Available values are periodic and batch. In case of
batch sync, writes will not be acknowledged until
writes are synced with disk.
See the
commit-
log_sync_batch_window_in_ms
property.
commitlog_sync
50
If commitlog_sync is in batch mode, Cassandra
will acknowledge writes only after commit log
sync windows expires and data will be fsynced to
disk.
commitlog_sync_batch_window_in_ms
10000
If commitlog_sync is periodic. Commit log will be
fsynced to disk after this value.
commitlog_sync_period_in_ms
32
Commit log segment size. Upon reaching this lim-
it, Cassandra flushes memtables to disk in form of
sstables. Keep it to minimum in case of 32 bit
JVM to avoid running out of address space and re-
duced commit log flushing.
commitlog_segment_size_in_mb
Implementation of
SeedProvider
interface.
SimpleSeedProvider
is default implementa-
tion and takes comma separated list of addresses.
Default value for “-seeds” parameter is 127.0.0.1.
Please change it for multiple node addresses, in
case of multi-node deployment.
seed_provider
SimpleSeedProvider
32
If workload data cannot fit in memory, it would re-
quire to fetch data from disk. Set this parameter to
perform number of concurrent reads.
concurrent_reads
