Friday, March 31, 2017

What is failure detection and failure masking in distributed system ?

A distributed system

Is a model in which components located on networked computers communicate and coordinate their actions by passing messages. The components interact with each other in order to achieve a common goal. 

Tuesday, March 28, 2017

Let's create 8 bit LED binary counter

Here, I am going to discuss how to create 8 bit LED binary counter using Arduino micro controller board . This binary counter  displays  decimal numbers from 0 to 255 in 8 bit binary format using 8 LEDs, where as 1 is represented by lighting only left most  (2)  LED.Number  representation will be increased from 0 to 255 automatically .
Following figure shows several lighting patterns according to the decimal value from 0 to 7.


How to send Slack notification using a Python script?

 In this article,  I am focussing on sending Slack notifications periodically based on the records in the database. Suppose we have to monit...