Elasticsearch: Working with Indices

Elasticsearch: Explaining clustering and indices...

November 22, 2017 · 4 min · Alexander Holbreich

Internal data structures of Elasticsearch

Review of the Elasticsearch’s internal data structures. A tutorial...

November 20, 2017 · 3 min · Alexander Holbreich

Elasticsearch cluster configuration: What i've learned

Elasticsearch cluster configuration: Best practices...

November 17, 2017 · 8 min · Alexander Holbreich

Thoughts on Elasticsearch

Elasticsearch introduction and review...

August 18, 2017 · 4 min · Alexander Holbreich

Just tried Google Cloud SQL (with update)

Google Cloud SQL: A Review in 2015 and then review of later improvements...

March 23, 2015 · 3 min · Alexander Holbreich

Introduction to the data model of cassandra db

Introduction to the data model of Apache Cassandra NoSQL database...

November 5, 2013 · 4 min · Alexander Holbreich

Installing Apache Cassandra

Installing and configuring Apache Cassandra...

October 17, 2013 · 4 min · Alexander Holbreich

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....

August 11, 2007 · 3 min · Alexander Holbreich

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)....

January 13, 2007 · 4 min · Alexander Holbreich