web technology

Articles about web technologies how stuff work on web application, tutorials, website performance and technical seo tips. Experienced Web Developer or just starting now a lake of information on how overcome common problems

Elastic Search and Lucene

Elasticsearch is search engine server, when you have tables that contain millions of records to search doing this in MySQL it will not be efficient, you have to index your records by building an index. Elastic search used as a base, a java project called Apache Lucene, elastic team build a REST ...

25th September 2019
by Vasilis Vontikakis

PHP Database Migrations

When we development a web application usually there is the need for a database for storing the data, one of the firsts steps is create a schema and in some later time point, maybe we need to make changes. Changes could include adding a new table, or column, a foreign key etc. So not only we need ...

22nd June 2019
by Vasilis Vontikakis

Mysql Upgrading from 5.5 to 5.6

If you have a VPS, at some point you will have to make the upgrade from mysql 5.5 to 5.6. However the upgrade may fail if your VPS doesn't have more than 500MB of RAM or your all your free RAM resources are less than 400MB.

The reason is that mysql 5.6 needs to allocate 400MB additional ...

29th September 2019
by Vasilis Vontikakis

Composer PHP Dependency Manager

Writing something in PHP was already hard. There were always compatibility issues with older server versions that did not support your new application. Lately with all the great frameworks that are out there, another problem appeared: how could you use components that rely on other libraries, ...

30th August 2019
by Vasilis Vontikakis

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