Cassandra: What it is and what not

Recently I had a chance to work on the Cassandra. To explain the need in short, it was required to have a distributed key-value store. While Redis is great but it doesn’t let you have multiple geographically distributed writable servers but Cassandra does. Writing here few points about Cassandra and so that one can keep… Continue reading Cassandra: What it is and what not

PDO: PHP Data Object

There are different ways of connecting to database in PHP. The most general way in use is MySQL extension, which we have discussed here and even everywhere. Well there are two other ways of connecting to database. First one is MySQLi and other is PDO. Now, question is what is the difference? So, the difference… Continue reading PDO: PHP Data Object