java.lang.Object
- org.springframework.boot.actuate.metrics.repository.redis.RedisMetricRepository

All Implemented Interfaces:
MetricReader, MetricRepository, CounterWriter, GaugeWriter, MetricWriter
```
public class RedisMetricRepository
extends Object
implements MetricRepository
```
A MetricRepository implementation for a redis backend. Metric values are stored as zset values plus a regular hash value for the timestamp, both against a key composed of the metric name prefixed with a constant (default "spring.metrics."). If you have multiple metrics repositories all point at the same instance of Redis, it may be useful to change the prefix to be unique (but not if you want them to contribute to the same metrics).

Constructor Summary

Constructors
Constructor	Description
`RedisMetricRepository(org.springframework.data.redis.connection.RedisConnectionFactory redisConnectionFactory)`	Create a RedisMetricRepository with a default prefix to apply to all metric names.
`RedisMetricRepository(org.springframework.data.redis.connection.RedisConnectionFactory redisConnectionFactory, String prefix)`	Create a RedisMetricRepository with a prefix to apply to all metric names (ideally unique to this repository or to a logical repository contributed to by multiple instances, where they all see the same values).
`RedisMetricRepository(org.springframework.data.redis.connection.RedisConnectionFactory redisConnectionFactory, String prefix, String key)`	Allows user to set the prefix and key to use to store the index of other keys.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`long`	`count()`	The number of metrics known to this reader.
`Iterable<Metric<?>>`	`findAll()`	Find all the metrics known to this reader.
`Metric<?>`	`findOne(String metricName)`	Find an instance of the metric with the given name (usually the latest recorded value).
`void`	`increment(Delta<?> delta)`	Increment the value of a metric (or decrement if the delta is negative).
`void`	`reset(String metricName)`	Reset the value of a metric, usually to zero value.
`void`	`set(Metric<?> value)`	Set the value of a metric.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RedisMetricRepository
```
public RedisMetricRepository(org.springframework.data.redis.connection.RedisConnectionFactory redisConnectionFactory)
```
    Create a RedisMetricRepository with a default prefix to apply to all metric names. If multiple repositories share a redis instance they will feed into the same global metrics.
    Parameters:
    redisConnectionFactory - the redis connection factory
  - RedisMetricRepository
```
public RedisMetricRepository(org.springframework.data.redis.connection.RedisConnectionFactory redisConnectionFactory,
                             String prefix)
```
    Create a RedisMetricRepository with a prefix to apply to all metric names (ideally unique to this repository or to a logical repository contributed to by multiple instances, where they all see the same values). Recommended constructor for general purpose use.
    Parameters:
    redisConnectionFactory - the redis connection factory
    prefix - the prefix to set for all metrics keys
  - RedisMetricRepository
```
public RedisMetricRepository(org.springframework.data.redis.connection.RedisConnectionFactory redisConnectionFactory,
                             String prefix,
                             String key)
```
    Allows user to set the prefix and key to use to store the index of other keys. The redis store will hold a zset under the key just so the metric names can be enumerated. Read operations, especially findAll() and count(), will only be accurate if the key is unique to the prefix of this repository.
    Parameters:
    redisConnectionFactory - the redis connection factory
    prefix - the prefix to set for all metrics keys
    key - the key to set
- Method Detail
  - findOne
```
public Metric<?> findOne(String metricName)
```
    Description copied from interface: MetricReader
    Find an instance of the metric with the given name (usually the latest recorded value).
    Specified by:
    findOne in interface MetricReader
    Parameters:
    metricName - the name of the metric to find
    Returns:
    a metric value or null if there are none with that name
  - findAll
```
public Iterable<Metric<?>> findAll()
```
    Description copied from interface: MetricReader
    Find all the metrics known to this reader.
    Specified by:
    findAll in interface MetricReader
    Returns:
    all instances of metrics known to this reader
  - count
```
public long count()
```
    Description copied from interface: MetricReader
    The number of metrics known to this reader.
    Specified by:
    count in interface MetricReader
    Returns:
    the number of metrics
  - increment
```
public void increment(Delta<?> delta)
```
    Description copied from interface: CounterWriter
    Increment the value of a metric (or decrement if the delta is negative). The name of the delta is the name of the metric to increment.
    Specified by:
    increment in interface CounterWriter
    Parameters:
    delta - the amount to increment by
  - set
```
public void set(Metric<?> value)
```
    Description copied from interface: GaugeWriter
    Set the value of a metric.
    Specified by:
    set in interface GaugeWriter
    Parameters:
    value - the value
  - reset
```
public void reset(String metricName)
```
    Description copied from interface: CounterWriter
    Reset the value of a metric, usually to zero value. Implementations can discard the old values if desired, but may choose not to. This operation is optional (some implementations may not be able to fulfill the contract, in which case they should simply do nothing).
    Specified by:
    reset in interface CounterWriter
    Parameters:
    metricName - the name to reset

Class RedisMetricRepository

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

RedisMetricRepository

RedisMetricRepository

RedisMetricRepository

Method Detail

findOne

findAll

count

increment

set

reset