---
Title: Write-behind configuration for cassandra
aliases: null
alwaysopen: false
categories:
  - docs
  - integrate
  - rs
  - rdi
description:
  Describes the `application.properties` settings that configure Debezium
  Server for cassandra
group: di
linkTitle: cassandra
summary:
  Redis Data Integration keeps Redis in sync with the primary database in near
  real time.
type: integration
weight: null
---

## application.properties

```properties
debezium.sink.type=redis
debezium.sink.redis.message.format=extended
debezium.sink.redis.address=<RDI_HOST>:<RDI_PORT>
# Comment the following line if not using a password for Write-behind.
debezium.sink.redis.password=<RDI_PASSWORD>
debezium.sink.redis.memory.limit.mb=80
# Redis SSL/TLS
#debezium.sink.redis.ssl.enabled=true
# When Redis is configured with a replica shard, these properties allow to verify that the data has been written to the replica.
#debezium.sink.redis.wait.enabled=true
#debezium.sink.redis.wait.timeout.ms=1000
#debezium.sink.redis.wait.retry.enabled=true
#debezium.sink.redis.wait.retry.delay.ms=1000
#debezium.source.database.history.redis.ssl.enabled=true
# Location of the Java keystore file containing an application process' own certificate and private key.
#javax.net.ssl.keyStore=<KEY_STORE_FILE_PATH>
# Password to access the private key from the keystore file specified by javax.net.ssl.keyStore. This password is used twice: To unlock the keystore file (store password), and To decrypt the private key stored in the keystore (key password).
#javax.net.ssl.keyStorePassword=<KEY_STORE_PASSWORD>
# Location of the Java keystore file containing the collection of CA certificates trusted by this application process (trust store).
#javax.net.ssl.trustStore=<TRUSE_STORE_FILE_PATH>
# Password to unlock the keystore file (store password) specified by javax.net.ssl.trustStore.
#javax.net.ssl.trustStorePassword=<TRUST_STORE_PASSWORD>

debezium.source.connector.class=io.debezium.connector.cassandra.Cassandra4Connector
debezium.source.snapshot.consistency=ONE
debezium.source.offset.storage=io.debezium.storage.redis.offset.RedisOffsetBackingStore
debezium.source.topic.prefix=<SOURCE_LOGICAL_SERVER_NAME>
debezium.source.cassandra.node.id=<NAME_SOURCE_NODE>
debezium.source.cassandra.hosts=<SOURCE_DB_HOST>
debezium.source.cassandra.port=<SOURCE_DB_PORT>
debezium.source.cassandra.config=<ABSOLUTE_PATH_CONFIG_FILE>
debezium.source.commit.log.relocation.dir=<RELOCATION_DIR>
debezium.source.commit.log.real.time.processing.enabled=true
debezium.source.commit.marked.complete.poll.interval.ms=1000
debezium.source.http.port=8040

# Whether to include the detailed schema information generated by Debezium in each record written to RDI.
# Note: Including the schema reduces the initial sync throughput and is not recommended for large data sets.
debezium.source.key.converter.schemas.enable=false
debezium.source.value.converter.schemas.enable=false
# When detailed schema information is excluded, handle decimal numeric types as strings.
debezium.source.decimal.handling.mode=string

debezium.transforms=AddPrefix
debezium.transforms.AddPrefix.type=org.apache.kafka.connect.transforms.RegexRouter
debezium.transforms.AddPrefix.regex=.*
debezium.transforms.AddPrefix.replacement=data:$0

# Logging
# Uncomment the following lines if running Debezium Server as a Java standalone process (non-containerized).
#quarkus.log.file.enable=true
#quarkus.log.file.path=<LOG_FILE_PATH>
#quarkus.log.file.rotation.max-file-size=100M
#quarkus.log.file.rotation.rotate-on-boot=true
#quarkus.log.file.rotation.file-suffix=.yyyy-MM-dd.gz
#quarkus.log.file.rotation.max-backup-index=3

# The default minimum log level for every log category, change only quarkus.log.level when needed.
quarkus.log.min-level=TRACE
# The default log level for every log category.
quarkus.log.level=INFO
# Determine whether to enable the JSON console formatting extension, which disables "normal" console formatting.
quarkus.log.console.json=false
# The port on which Debezium exposes Microprofile Health endpoint and other exposed status information.
quarkus.http.port=8088
```