M04 Q33 What are the Health Indicators that are provided out of the box?

Spring Actuator provides following Health Indicators that are configured when proper dependencies are found:

• ApplicationHealthIndicator - Default Implementation, always up.
• DiskSpaceHealthIndicator - Checks for low disk space.
• DataSourceHealthIndicator - Checks the status of a DataSource and optionally runs a test query.
• CassandraHealthIndicator - Checks that a Cassandra database is up.
• CouchbaseHealthIndicator - Checks that a Couchbase cluster is up.
• ElasticsearchHealthIndicator - Checks that an Elasticsearch cluster is up.
• HazelcastHealthIndicator - Checks that a Hazelcast server is up.
• InfluxDbHealthIndicator - Checks that an InfluxDB server is up.
• JmsHealthIndicator - Checks that a JMS broker is up.
• MailHealthIndicator - Checks that a mail server is up.
• MongoHealthIndicator - Checks that a Mongo database is up.
• RabbitHealthIndicator - Checks that a Rabbit server is up.
• RedisHealthIndicator - Checks that a Redis server is up.
• SolrHealthIndicator - Checks that a Solr server is up.
• Neo4jHealthIndicator - Checks the status of a Neo4j by executing a Cypher

Spring Actuator also provides Reactive Health Indicators for reactive applications, like those using Spring WebFlux:

• CassandraReactiveHealthIndicator - Checks that a Cassandra database is up.
• CouchbaseReactiveHealthIndicator - Checks that a Couchbase cluster is up.
• MongoReactiveHealthIndicator - Checks that a Mongo database is up.
• RedisReactiveHealthIndicator - Checks that a Redis server is up.