Data layer

Second level caching

The data layer uses Hibernate as the ORM framework. By default, Hibernate provides first-level caching at the entity level. In this application, second-level caching is also enabled, with Caffeine configured as the default cache provider.

Redis

Redis can be configured as a distributed second-level cache provider for Hibernate. To enable Redis as the Hibernate second-level cache provider in the application, set the following property:

flowinquiry.hibernate.second_level_cache.provider=redis

When Redis is used as hibernate second level provider, the following configurations can also be set:

• flowinquiry.hibernate.second-level-cache.redis.idleConnectionTimeout=10000
  • Default value: 10000
• flowinquiry.hibernate.second-level-cache.redis.connectTimeout=10000
  • Default value: 10000
• flowinquiry.hibernate.second-level-cache.redis.timeout=3000
  • Default value: 3000
• flowinquiry.hibernate.second-level-cache.redis.retryAttempts=3
  • Default value: 3
• flowinquiry.hibernate.second-level-cache.redis.retryInterval=1500
  • Default value: 1400
• flowinquiry.hibernate.second-level-cache.redis.subscriptionsPerConnection=5
  • Default value: 5
• flowinquiry.hibernate.second-level-cache.redis.address=redis://${REDIS_HOST:localhost}:${REDIS_PORT:6379}
  • Default value: redis://localhost:6379
  • REDIS_HOST env variable can also be set to change the host name
  • REDIS_PORT env variable can also be set to change the port number
• flowinquiry.hibernate.second-level-cache.redis.subscriptionConnectionMinimumIdleSize=1
  • Default value: 1
• flowinquiry.hibernate.second-level-cache.redis.subscriptionConnectionPoolSize=50
  • Default value: 50
• flowinquiry.hibernate.second-level-cache.redis.connectionMinimumIdleSize=10
  • Default value: 10
• flowinquiry.hibernate.second-level-cache.redis.connectionPoolSize=64
  • Default value: 64
• flowinquiry.hibernate.second-level-cache.redis.database=0
  • Default value: 0
• flowinquiry.hibernate.second-level-cache.redis.dnsMonitoringInterval=5000
  • Default value: 5000