My team and I make heavy use of Spring Boot to build microservices that power our applications at our company. We've even gone so far as to write our own custom auto configurations to ease development. We package these auto configurations along with other goodies into what we call our platform.Recently, after releasing a new platform version, we encountered an issue where one of our microservices would fail to start at what appeared to be random intervals. After further digging, we noticed specifically...
Eventually you'll reach a point where you need to run multiple instances of an application or a service for high availability or to manage increased load. That's what load balancers are for. There's generally two different types:What many people would call a "load balancer" is actually a server-side load balancer. It can be implemented in hardware or software. The traffic is sent to a dedicated service that decides where to send the traffic, using an algorithm like round-robin, to one of the...
As a Software Engineer I'm always keeping up to date with technology and one of the things that helps me do that is book reviews. Right now, I'm reviewing The Book of R: A First Course in Programming and Statistics by Tilman M. Davies. R is a programming language used in statistical computing and has gained in popularity in the recent years due to the explosion of data and its applications like Machine Learning.
"What is the one technology I need to learn to get a job like the one you have?" - this is a question I've received from time to time, and my answer would vary, depending on who asked. Or rather; who I perceive the questioner to be - I cannot *know* for a fact what most suits his or her particular ambitions and style.. But in the last few years my answer, more often than not, has been "PowerShell"! Simply because I see it as one of the most important and game-changing technologies to come out of...
It's August 2016 and the Spring Boot team recently released Spring Boot 1.4 ( on July 28th, 2016 ). Some of the biggest improvements and simplifications are around unit and integration testing. We'll take a focused look at two of the newly added features: @MockBean and @SpyBeanThe newly introduced annotation, (@MockBean), adds generalized support for mocking of any Spring bean. If you've used Mockito Annotations before, @MockBean is simliar to @Mock but with Spring support.Suppose we have a simple...
Debian 8 (Jessie) doesn't contain RoundCube in it's repositories. Why, I don't know :) .
In ISPConfig3, Perfect Server, Debian 8, you get SquirrelMail, but I don't like how it looks.
With some trouble setting it up, I managed to configure RoundCube on Debian 8 and make it wokring with ISPConfig3. Used many sources to make it work and decided to create this manual that you’re reading.I presume that you have configured your server with Perfect Server Debian 8 (Apache, BIND, Dovecot, ISPConfig 3) configuraton...
How to initiate git through sshlogin using shh~~~git
$ ssh [email protected]
~~~creating a folder
$ mkdir folder_name
~~~changing to that newly created folder~~~git
$ cd folder_name
~~~initiating as a master branch~~~git
$ git init --bare
~~~changing the windows pack~~~git
$ git config pack.window 0
~~~##step 5 : clone to local machine usingcloning the newly created folder to local~~~git
$ git clone [email protected]
~~~adding the all files which are created
Recently, I was drafting some PowerShell codes and stumbled across which conditional statement should I use for a very simple task and decided to explore abit more on their performance differences.Below is a sample code that I have coded to display the result of the overall performance between some of the conditional statements method and it is purely for educational coding purposes.If anyone is interested to find out, copy the codes below, paste it on PowerShell ISE and run it.
This article will show how to calculate the distance beween two addresses using Google Maps API. Blog.I was looking to an easy way to calculate the distance between two addresses using SQL and Google Maps Distance Matrix API and I found this post from stackoverflow very useful.Here is how I use the Google Maps Distance Matrix API:CREATE PROCEDURE [dbo].[CalculateDistance] (
@ToAddress NVARCHAR(100) = '',
@FromAddress NVARCHAR(100) = '',
@DistanceistanceInKm FLOAT OUTPUT )
This script is based on Mike Pfeiffer'sIt shows how many users are currently connected to each CAS detailing each sessions per protocol (RPC, OWA and EAS)You can get the client load distribution per server, how many users are connected in each server and know when the mail client services are ready after a maintenance reboot.The following powershell script will grab performance counter data from each CAS server to determine the number of active EAS, OWA and RPC sessions:~~~powershell[PSObject]...
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