Remapping elastic search index For every change in the mapping or settings of the elastic search index, we have to create a new index as there is no way to edit an existing index. So here are the basic requests that you have to fire to achieve it, but first thing first, lets create an … Continue reading Change Elastic Search Mapping
Scalability is one of the most important factors which decides the success of any application. Scaling an application is non trivial, hence it becomes more critical. Scaling can become a nightmare if not planned well. Keeping in mind some of the best practices, architectural patterns and application design concepts can make it easier and straightforward. … Continue reading Scaling applications : The Scale Cube
Most software today is very much like an Egyptian pyramid with millions of bricks piled on top of each other, with no structural integrity, but just done by brute force and thousands of slaves. – Alan Kay
Writing code is simple. Yes, you read it right. It is simple, but writing code as readable as a fairy tale is an art.And art is not simple. Now why should we write readable code? Because our code is for humans first and machines later. If you are working alone that’s fine, but if you are working in a team (in most cases yes) you need to collaborate with your team members.
To achieve that, you need to write code which is easily understood by others.If your code is a puzzle for others, its not a good code. It might be working correctly, it might be very efficient but not readable.Now the chances…
View original post 1,189 more words
Facebook.com is the most popular social networking website which has more than 1.2 billion monthly active users. This number is increasing everyday, which in turn increases the data being generated exponentially. You can just imagine how much data is generated on Facebook in terms of text, images, videos, locations etc everyday.As per Facebook posts on code.facebook.com, their warehouse stores up to 300PB(peta bytes) of data with an incoming rate of 600 TB per day.Believe me, thats a lot of data.
For our not-so-tech users lets discuss something on bits and bytes.
- 1 Bit – A value of either 0 or 1.
- 1 Byte – 8 bits.
- 1 KB(Kilo Byte) – 1024 Bytes
- 1 MB(Mega Byte) – 1024 KB
- 1 GB(Giga Byte) – 1024 MB
- 1 TB(Tera Byte) – 1024 GB
- 1 PB(Peta Byte) – 1024 TB
- 1 EB(Exa Byte) – 1024 PB
- 1 ZB(Zetta Byte) – 1024 EB
View original post 797 more words
In general it is a very simple pattern. You just wrap your function/method/behaviour with another function which keeps track of the failures/success of the that function (service/DB calls) and opens or closes the circuit for you. Sounds simple enough. It is simple.