Today’s blog post is fairly different from the blog posts that I have been writing. It’s about a public meetup that I did which was organized by ISC2 Colombo chapter. The topic was ‘Application High Availability for Operational Continuity’. No sooner the topic was selected I knew that It was an interesting topic for me and for the audience ;-) The ...
I’m a big fan of APIs (I even wrote an article on REST API Architecture – Best Practices) because in any given enterprise application in today’s modern world, the API is considered to be one of the key success factors in digital transformation of any business. When you have multiple APIs being exposed and being accessed by a number of entities, there has to ...
Nginx is one of the most famous web servers in the today’s market which provides a set of features that the Enterprise can utilize to scale out the infrastructure. Today, we are going to focus on installing Nginx on Ubuntu, setting it up as a reverse proxy and to load balance (high availability) with Keepalived. I have done a similar ...
In today’s world, microservices architecture is taking over pretty much everything. The deployment mechanism that goes with microservers is containers. When you have a lot of containers in your application you need to have a platform to manage those containers. That’s where the Kubernetes comes into the picture. What is Kubernetes Kubernetes is an open-source system for automating deployment, scaling, and management ...
How’s it going tech folks? I have been silent for a while but decided to make a noise after all. How to architecture your product precisely for it to operate without any abnormalities to meet its non-functional requirements is what I’m going to talk about. If you don’t properly architecture your product it might behave abnormally under a heavy load, could be vulnerable ...
How’s it going tech folks? I have been using NoSQL for a while now and I like it. So today I’m going to talk about how to deploy (Install) a Couchbase database cluster on Ubuntu. What’s Couchbase Couchbase is one of the most popular NoSQL databases. If you are wondering why NoSQL? Read here. Anyway what they say about Couchbase is “Develop ...
Hadoop is everywhere and gaining attention like crazy. This is not an article which explains what’s it or how it works because there are a lot of good resources for that. So I don’t want to repeat the same stuff but I’m going to help you to go step further and deploy a Hadoop multi node cluster on ubuntu. Pretty interesting right? ...
SOA(Service Oriented Architecture) has become a foundation for the most of the application that are developed today. A service oriented architecture is an architectural pattern which enables collection of services to communicate with external/internal parties to pass data or for services coordinating. Let’s start from what’s a service. What’s a Service/API A service is a function that is well-defined, self-contained, and does not depend on ...
Today let’s focus on a Linux command list that will be useful to a newbie who is just starting off with Linux. It doesn’t matter whether you are a web developer or software engineer if you are going to use Linux you have to learn these. These commands are used day to day to get done work. I don’t want ...
What’s High Availability High availability is a critical success factor for any given enterprise application. Today we’ll go through how to design and deploy an application with high availability. First things first. Let’s see what’s high availability. High availability is a characteristic of a system, which describes the duration (length of time) for which the system is operational. – Wikipedia ...
Introduction Today we are going to experience the power of the SSH(Secure Shell) command. Yes Linux. I recently wrote an article on X11 forwarding that allows to map your local computer’s GUI to server where SSH is used underneath. It’s time for you read it if you haven’t. To understand the today’s topic let’s 1st look at what’s tunnelling that’s ...
Apache Access Logs Centralising Apache logs can be useful in many scenarios. Let’s get the basics 1st. So Apache logs can be defined as In order to effectively manage a web server, it is necessary to get feedback about the activity and performance of the server as well as any problems that may be occuring. The Apache HTTP Server provides ...
So WSO!!! By attempting any of the things listed in this blog post you accept full responsibility for your actions and I will not be held responsible whatsoever. This tutorial is strictly for penetration testers only. Today we are going to talk about a slightly different topic. I’m pretty sure you are going to love it if you are techie ...
So WSO!!! By attempting any of the things listed in this blog post you accept full responsibility for your actions and I will not be held responsible whatsoever. This tutorial is strictly for penetration testers only. Today we are going to talk about a slightly different topic. I’m pretty sure you are going to love it if you are techie ...
So Nikto!!! Is your site safe on the internet? Are you sure? Let’s make sure you are safe from hackers. Today we’ll divine into a tool which will help us to stay safe. The name is Nikto. It is a vulnerability scanner else can be called as a security testing tool that scans web servers for vulnerabilities and other known issues. ...
So Nikto!!! By attempting any of the things listed in this blog post you accept full responsibility for your actions and I will not be held responsible whatsoever. This tutorial is strictly for penetration testers only. Is your site safe on the internet? Are you sure? Let’s make sure you are safe from hackers. Today we’ll divine into a tool which ...
So Nikto!!! Is your site safe on the internet? Are you sure? Let’s make sure you are safe from hackers. Today we’ll divine into a tool which will help us to stay safe. The name is Nikto. It is a vulnerability scanner else can be called as a security testing tool that scans web servers for vulnerabilities and other known issues. ...
Today we are going to talk about UML Generator called phUML which is written in PHP. phUML is one of the best tools I have encountered to generate a class diagram from the existing PHP code. This is a common need when it comes to agile methodology. At some point we all have to write code 1st then do the documentation such ...
Back once again it’s Linux time. This post also can be named as how to set up a floating IP between load balancers or how to set up a shared IP for between load balancers or how to configure a high available load-balancers. what happens here we are using keepalived, which allows us to setup HAProxy nodes to create active/passive cluster so that ...
Hybrid mobile application development is a hot topic these days. PhoneGap is one of the frameworks that can be used to develop hybrid mobile apps. If you are new to hybrid mobile application development read this post. You only have to follow these steps to have a PhoneGap app up and running in your Ubuntu. Before that, What’s PhoneGap PhoneGap is a ...
