Was this page helpful?
ScyllaDB Python Driver is available under the Apache v2 License. ScyllaDB Python Driver is a fork of DataStax Python Driver. See Copyright here.
cassandra.metrics
- Performance Metrics¶A collection of timers and counters for various performance metrics.
Timer metrics are represented as floating point seconds.
A greplin.scales.PmfStat
timer for requests. This is a dict-like
object with the following keys:
count - number of requests that have been timed
min - min latency
max - max latency
mean - mean latency
stddev - standard deviation for latencies
median - median latency
75percentile - 75th percentile latencies
95percentile - 95th percentile latencies
98percentile - 98th percentile latencies
99percentile - 99th percentile latencies
999percentile - 99.9th percentile latencies
A greplin.scales.IntStat
count of the number of times that a
request to a Cassandra node has failed due to a connection problem.
A greplin.scales.IntStat
count of write requests that resulted
in a timeout.
A greplin.scales.IntStat
count of read requests that resulted
in a timeout.
A greplin.scales.IntStat
count of write or read requests that
failed due to an insufficient number of replicas being alive to meet
the requested ConsistencyLevel
.
A greplin.scales.IntStat
count of all other request failures,
including failures caused by invalid requests, bootstrapping nodes,
overloaded nodes, etc.
A greplin.scales.IntStat
count of the number of times a
request was retried based on the RetryPolicy
decision.
A greplin.scales.IntStat
count of the number of times a
failed request was ignored based on the RetryPolicy
decision.
A greplin.scales.IntStat
count of the number of nodes in
the cluster that the driver is aware of, regardless of whether any
connections are opened to those nodes.
A greplin.scales.IntStat
count of the number of nodes that
the driver currently has at least one connection open to.
A greplin.scales.IntStat
count of the number connections
the driver currently has open.
Returns the metrics for the registered cluster instance.
Set the metrics stats name. The stats_name is a string used to access the metris through scales: scales.getStats()[<stats_name>] Default is ‘cassandra-<num>’.
Was this page helpful?
ScyllaDB Python Driver is available under the Apache v2 License. ScyllaDB Python Driver is a fork of DataStax Python Driver. See Copyright here.
cassandra
- Exceptions and Enumscassandra.cluster
- Clusters and Sessionscassandra.policies
- Load balancing and Failure Handling Policiescassandra.auth
- Authenticationcassandra.graph
- Graph Statements, Options, and Row Factoriescassandra.metadata
- Schema and Ring Topologycassandra.metrics
- Performance Metricscassandra.query
- Prepared Statements, Batch Statements, Tracing, and Row Factoriescassandra.pool
- Hosts and Connection Poolscassandra.protocol
- Protocol Featurescassandra.encoder
- Encoders for non-prepared Statementscassandra.decoder
- Data Return Formatscassandra.concurrent
- Utilities for Concurrent Statement Executioncassandra.connection
- Low Level Connection Infocassandra.util
- Utilitiescassandra.timestamps
- Timestamp Generationcassandra.io.asyncioreactor
- asyncio
Event Loopcassandra.io.asyncorereactor
- asyncore
Event Loopcassandra.io.eventletreactor
- eventlet
-compatible Connectioncassandra.io.libevreactor
- libev
Event Loopcassandra.io.geventreactor
- gevent
-compatible Event Loopcassandra.io.twistedreactor
- Twisted Event Loopcassandra.cqlengine.models
- Table models for object mappingcassandra.cqlengine.columns
- Column types for object mapping modelscassandra.cqlengine.query
- Query and filter model objectscassandra.cqlengine.connection
- Connection management for cqlenginecassandra.cqlengine.management
- Schema management for cqlenginecassandra.cqlengine.usertype
- Model classes for User Defined Typescassandra.datastax.graph
- Graph Statements, Options, and Row Factoriescassandra.datastax.graph.fluent
cassandra.datastax.graph.fluent.query
cassandra.datastax.graph.fluent.predicates
On this page