18.5. Redis Data Store Configuration

This section details Redis-specific configuration properties. For general properties, see Runtime Configuration.

18.5.1. geomesa.redis.age.off.interval

Sets how often features will be checked for expiration. The interval should be specified as a duration, for example 1 hour or 10 minutes. By default, expiration will run every 10 minutes. See Feature Expiration for more details.

18.5.2. geomesa.redis.tx.backoff

Sets the back-off multiplier for retrying writes that fail due to concurrent conflicting clients. For each retry attempt, the client will wait based on geomesa.redis.tx.pause and this back-off multiplier. The multipliers are specified as a comma-delimited list of numbers, where each number corresponds to a retry attempt. For example, by default, the multipliers are 1,1,2,2,5,10,20, which means that the first and second retry attempts will use the pause unmodified, the third and fourth attempts will double the pause, the fifth and sixth attempts will multiply the pause by 5 and 10, respectively, and any subsequent attempts will multiply the pause by 20. There is also a small random delay added, to prevent clients from pausing for the exact same amount of time. See also geomesa.redis.tx.pause and geomesa.redis.tx.retry.

18.5.3. geomesa.redis.tx.pause

Sets the delay between retry attempts, for retrying writes that fail due to concurrent conflicting clients. For each retry attempt, the client will wait based on geomesa.redis.tx.backoff and this pause value. The pause value should be specified as a duration, and defaults to 100ms. See also geomesa.redis.tx.backoff and geomesa.redis.tx.retry.

18.5.4. geomesa.redis.tx.retry

Sets the number of times to attempt to write to Redis for a given transaction. Due to multi-threading, some writes to Redis may fail if clients are simultaneously updating the same schema. In such a scenario, the writes will be retried several times, with increasing back-off times to allow for a busy system. By default, writes are retried 10 times. See also geomesa.redis.tx.backoff and geomesa.redis.tx.pause.

18.5.5. geomesa.redis.write.batch

Sets the default batch size for writing features to Redis. When using a GeoTools, FeatureWriter, data will only be sent to Redis once the batch size is reached (or with an explicit flush or close of the writer). By default, the batch size is set to 1000 features.