Mert Çalışkan – Medium

Mert Çalışkan

Mert Çalışkan

Executing Cloudformation bash scripts with sudo

The biggest catch for Cloudformation is to execute your bash scripts (a.k.a UserData) after spawning your instance but in order to execute…

Jan 2, 2017

Jan 2, 2017

Mert Çalışkan

How to silently change admin password and enable secure admin on Payara

While installing Payara on Amazon EC2 instances, I wanted to enable accessing the admin console remotely. This is easy to handle with…

Jan 1, 2017

Jan 1, 2017

Mert Çalışkan

Creating Cassandra Cluster with Kitematic

Docker Toolbox is a nice toolset from Docker that offers:

Sep 16, 2015

Creating Cassandra Cluster with Kitematic

Sep 16, 2015

Mert Çalışkan

Using Hibernate 5 on Payara

While deploying Hibernate 5.0.1.Final powered application on Payara 4.1.153, I faced with the stacktrace given below.

Sep 14, 2015

Using Hibernate 5 on Payara

Sep 14, 2015

Mert Çalışkan

Helper method for waiting EC2 instances until they get ready

Automating EC2 instance creation is a necessity when it comes to executing a series of try-outs. The method given below is a nice helper…

Aug 18, 2015

Aug 18, 2015

Mert Çalışkan

Improving the Quality on PDF size reducing of the Preview App on Mac

Having a 1200dpi scanned PDF with a size of 20mb’s, I was looking for a way to shrink it down on Mac. Export feature on Preview app was my…

Aug 6, 2015

Aug 6, 2015

Mert Çalışkan

[PoC9] Performant setup w/ Cassandra, Netty, NGINX, RESTEasy to handle REST web service requests

After a series of PoCs (this, that and many others) executed on Amazon EC2, now it’s time to build up the stack that I’m planning to use…

Aug 5, 2015

[PoC9] Performant setup w/ Cassandra, Netty, NGINX, RESTEasy to handle REST web service requests

Aug 5, 2015

Mert Çalışkan

[PoC8] Performance tuning on Cassandra & EC2 to store 3 millions/minute requests by retrieving from…

I’ve already implemented a working PoC for storing 2 millions requests a minute on Cassandra but the final graph that was crafted from…

Aug 4, 2015

[PoC8] Performance tuning on Cassandra & EC2 to store 3 millions/minute requests by retrieving from…

Aug 4, 2015

Mert Çalışkan

[PoC7] Storing ~2millions/minute records in Cassandra by retrieving from a Netty-based REST web…

Having delt with REST web service implementations based on RESTEasy and Netty for quite some time, I’ve managed to handle from 20k/sec to…

Jul 28, 2015

[PoC7] Storing ~2millions/minute records in Cassandra by retrieving from a Netty-based REST web…

Jul 28, 2015

Mert Çalışkan

Install & run bare-bone Cassandra Cluster on EC2

I’ve already created a Cassandra Cluster on EC2 by employing Docker but if you need to do a bare-bone installation to compare some…

Jul 27, 2015

Jul 27, 2015

Mert Çalışkan

Mert Çalışkan

Opsgenie Champion at Atlassian. Oracle Java Champion. AnkaraJUG Lead. Author of Beginning Spring & PrimeFaces Cookbook.

Following

Help
Status
About
Careers
Press
Blog
Privacy
Terms
Text to speech
Teams