Elasticsearch: Working with Indices
Elasticsearch: Explaining clustering and indices
databases
Internal data structures of Elasticsearch
Review of the Elasticsearch’s internal data structures. A tutorial
Elasticsearch cluster configuration: What i've learned
Elasticsearch cluster configuration: Best practices
Thoughts on Elasticsearch
Elasticsearch introduction and review
Just tried Google Cloud SQL (with update)
Google Cloud SQL: A Review in 2015 and then review of later improvements
Introduction to the data model of cassandra db
Introduction to the data model of Apache Cassandra NoSQL database
Installing Apache Cassandra
Installing and configuring Apache Cassandra
Don't let trigger take control
In the genesis of Database Systems age, as triggers were proposed1, the goal of such DB mechanisms, was relatively clear. Triggers appeared for assuring and extending the control of integrity property in Database Systems: … Database Trigger is predefined database procedure, conditionally or unconditionally succeeding or preceding other database operations automatically…[IBM Research Report, RJ1820, 1976] The question That is actually what technically DB Triggers are still today. However having procedures (aka triggers) on the database level makes them available for anyone....
First Look at Java Persistence API (JPA)
The Java Persistence API (JPA) provides a POJO persistence model for object-relational mapping. The Java Persistence API was developed by the EJB 3.0 software expert group as part of JSR 220, but its use is not limited to EJB software components. It can also be used directly by web applications and Java SE application clients. So JPA is about persistence of the java objects or entities. An Entity is a lightweight domain specific java object that may be stored to persistent storage (mostly Relational DB)....