Elasticsearch is search engine server where you can index your records and make a very effect search and ranking, when use millions of records. Elastic search use as base, a java project called Apache Lucene, elastic team build a REST api where you can use all the features of Lucene by making ...
When a software project is in the development phase or during maintenance, sometimes is required to make changes in schema of the database such as add a new table, or column etc. We need to keep track to all these changes, to do this we use the technique of database migration which is a ...
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 ...
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