Author: Ramzi Alqrainy

Mobile Push Notification Targeting Generation Using Genetic Algorithm in Classifieds

Acquiring users takes time and money, we are working hard for them. However, push notifications are the follow-up to user acquisition, to make sure that the marketing dollars stretch as far as possible. The idea comes from specifying a system that will enable the OpenSooq to profile users, segment them and target them […]

Building Data Visualization for SolrCloud 7.0 using Apache Zeppelin

Data Visualization allow you to natively interact with all your data via custom dashboards. Apache Zeppelin is a new and incubating multi-purposed web-based notebook which brings data ingestion, data exploration, visualization, sharing and collaboration features to Hadoop, Solr and Spark. Apache Zeppelin turns your data into informative dashboards and reports that are easy […]

Solr – InMemory

Apache Solr is one of the most popular search engine nowadays, as known it’s a Java application. In this article, we will share with you the result of hosting solr data in the memory. To achieve this experiment, we have created a tmpfs and copied Solr application ( with all data ) […]

Moving from MongoDB 2.6 Cluster to MongoDB 3.2 Replica Set

Last year MongoDB released v3.2 of their database, with the same storage engine that has been released in v3.0 WiredTiger. As known, WiredTiger performs document-level locking during writes touting to offer a huge improvement over locks on the entire database or collection in the previous 2.6 version. We did many researches […]