Elasticsearch and Redis : NoSql

-



The colorful bubble logo is of Elasticsearch, while the redish logo is of Redis.

First let's talk about Elastic search..

Elasticsearch is an open source search engine. Now, what is a search engine? Search engine is basically a website, for example: google.com, yahoo.com, bing and MSN. What we look as Google chrome, Safari or Internet Explorer is basically a Web browser. Let's say we type "www.facebook.com" in a web browser's address bar, then the web browser will take us directly to the website "facebook.com". As for search engine, if we type in its search bar, "www.facebook.com", then it will open up different links according to the search algorithm.
So Elasticsearch is like a search engine. But it is different from traditional search engines. Like in most of the search engines, tables are used to store data, while elasticsearch is no schema based search engine. In place of tables, JSON documents are used in Elasticsearch. It is based upon Lucene Library.  
You can install it on your PC and use it to search in real time via queries. It also provides HTTP interface for searching. It is the mostly used search engine in enterprises. The main advantages of  Elasticsearch are:
  • It is open source (Apache licensed)
  • It is really really really fast (instant search + auto-completion + Index search)
  • It is scalable
  • It can be used on a system which has Java 7 + version (cross-platform)
You can find it's documentation here: Learn
Also the source code is available here: Source Code
You may test it here: Test
And the amazing tutorial is here: Tutorial

Side Note:  Developed by Elastic NV, author: Shay Banon, landed on earth in 2008 :)

Now what is Redis...

Well, Redis is basically a key-value store. Or It can simply be called as a NoSql database. Here the data is stored in the forms of different Data structures like lists, strings, hashes and other things except Tables. (Beware there are no Tables so NoSQL)
Redis is developed by Salvatore Sanfilippo. Redis is the FASTEST database used by most of the enterprises. Well-known Companies; using Redis include:
  • Twitter.
  • GitHub.
  • Pinterest.
  • Snapchat.
  • StackOverflow.
Redis is super fast as it uses only a single thread, so there are no thread conflicts, it also uses Pipelining for its processes. Redis uses master-slave phenomenon. Any server could be a master or a slave. You can make it faster by assigning one task to one slave, like one slave or server is responsible only for reading data while the other is responsible only for writing data.
It is written in C language. So is compatible with BSD, Windows, Macintosh and Linux. 
You can find its documentation on its official website : redis.io

 Side Note: It is also an Open Source DB

What's the conclusion?

So the conclusion is that, today data is growing exponentially and in order to deal with it; enterprises need scalability, speed and performance (along with some other things).. and..
Elasticsearch + Redis = nearly All of those things





Comments

Post a Comment

Popular posts from this blog

1-Machine Learning : Start...

-
Image
John went to the cafeteria 10 times at 1:00 P.M. on 10 Fridays, each time the cafeteria was closed at that particular time. John decided not to go to cafe at 1:00 P.M. on Friday because the cafe will be closed.  But wait! How did John know that the cafe will  also be closed on next Friday at 1:00 P.M.??? Yes, you are absolutely right.  "John Learned from his Experience that the Task of going to the cafeteria at 1:00 P.M. on Fridays resulted in waste of time, since the cafe was closed on each Friday, so it will Perform the same on the next Friday." In the above scenario, John learned something so we can call it " John Learning ". Similarly, if we replace John with some sort of Machine, that can learn from the Experience or from the History about how the tasks were performed in the past given certain situation. Such that the Machine will perform the same if the same task happen again in near future. Then this will be called as Machine Learning. To mak
Read more

A Survey of the Final Year University Students

-
Image
I don't know what should be the title of this blog post, but let's call it " A survey of the final year university students ". Pretty long title, huh? Okay, let me tell you about this survey... The story behind this thing: Well, one day I thought about writing a post on Facebook to ask people about their sentiments and reviews regarding the final year of university life, then another thought knocked my head to write a full blog post on this topic. Then I disseminated a google form for this purpose. The google form was saying: "Hello, final semester people! I thought to collect reviews of 2020 graduates specifically of NUST and other IT universities. I am planning to add these to my blog post. Please take a few seconds to fill this form, thank you." So that was a brief story behind this whole thing, Now let's have a look at the most awaited questions and the corresponding responses...  Question#1:  Do you feel like a better hu
Read more

Applications of Data Engineering

-
Image
In a previous blog post about data engineering, we went through several many concepts related to data engineering such as data modeling, and then we went through different types of databases, for example, relational databases and we also got a glimpse of relational as well as NoSQL databases. And in today's blog post we will be writing about data engineer applications. Which are basically the use cases of data engineering 1st let's see what data engineering applications mean; so basically when we have data and we have engineered it then there are several things that we can do with that data and these things that we can do with processed data are the use cases of the data engineering. For example: If we have filled our containers with the data then it's not of any good use if it is not clean and well-formed. If your data is well-formed and if there are no logical mistakes, missing values, and garbage then we can easily perform the use cases and applications of data enginee
Read more

Data Engineering Tools

-
Image
   Data is a new oil. To channelize this data we need proper pipelines. These pipelines are mostly called ETL or data pipelines.  There are various tools out there to work out these Extract, Transform, and Load (ETL) operations.  Some of the scripting tools are:  - Python - SQL and NoSQL Apache provides a wide range of products that can be used as Data Engineering tools.  Some of the amazing apache DE services comprised of; - Hadoop - Spark - Kafka - Cassandra - Hive In addition, some cool DE tools are: - Tableau - Talend - MapReduce These DE tools provide a way to manage the data pipelines in a more effective, efficient, and better way.  Almost every Data-Oriented company in the corporate sector is highly dependent upon these technologies. They are leveraging many of the above-mentioned mechanisms for promising Data Services and Architecture. That's it for today. Hope you have enjoyed this article. If you want to know more about data or software related concepts, let me know in th
Read more

Habits to adopt in the freshman year

-
Image
We are what we repeatedly do. Excellence, then, is not an act but a habit. ~Aristotle Have you ever noticed? When you were a kid, your parents used to correct you all the time, whenever you did some mistake. Why did they do so? Because at that time you were growing at the conscience and the sub-conscience level. Your mind was setting some patterns at that time. And today, you are mostly acting out of those patterns. Your parents want great patterns for you, that's why they used to scold you at an early age. The patterns set at that time is what you repeatedly do and that is what we call, "the habit".  Similarly, when you are a fresher you could adopt certain habits that could make or break you in the long run. Every one of us wants to have constructive habits. so here are some habits that you could adopt as a fresher in order to function well in coming years... Habits to Have 1. Googling Search on google for difficult and different concepts. Make it your h
Read more

UI / UX Designs

-
Image
Is there any website or an application that you enjoyed to use ? If I ask you why you like this particular application then most of you would say that it is fluent, it's easy to use or the theme is so soothing.  So what is behind all these user friendly themes and designs ? The answer is, UI and UX designs. UI stands for User Interface while UX is used for User Experience. In today's world it is important to provide user friendly interface. Your application must be liked by everyone to the extent that they don't want to close that tab.  Now lets dig deep into UI and UX designs.... UI vs UX designs.. The first thing is that UI designs focus on the interface or the front end, the application is providing to the user. It has to deal with beauty. How beautiful, attractive and good-looking is your application; determines its User Interface. While UX design deals with the experience of the user. Whether the user feels comfortable while using your application
Read more

Web Applications

-
Image
When did you open your Facebook last time? Have you connected with other people on Linked In? If not then, you might have sent an email... What am I talking about? Image Source That's right! I am talking about Web applications . Web applications are the applications that run over the web or an Internet. There are some differences between website and web applications. Difference between Websites and Web applications.. The main differences between websites and web applications are as under: Websites: Provide information as a static file. Not very much interactive. Don't allow the user to do transactions. For example: news feeds, blogs, images etc. Web applications: Provide dynamic data. Interactive rather than just informative. Allow the user to do transactions. For example: bidding sites, on-line shopping sites, mailing sites, facebook, Twitter and Wikipedia etc. How do they work? On an abstract and simple level, The client(web browser
Read more

How to take notes in Freshman Year ?

-
Image
Yes, you have to take notes in the university class!  Before talking about the notetaking strategy, we will understand the importance of taking notes. Importance Of Taking Notes No doubt there are a few students who can produce good results without even taking notes in the class. But their number is least. Most of us need to make good notes in the class especially when we are in university. Notes are important because: They help us to keep track of what we have studied in the whole semester. Notes help us to prepare for the exams, in a very short time. We can refer to our notes for short quizzes in the eleventh hour. In addition to reading and listening, writing notes increases the ability to memorize the important concepts. It helps you to realize that you have done something in the class. Now that we have understood Why to take notes? Let's dig into the notetaking strategy  Notes taking Strategies One of my friends Ramlah Aamir Aziz used to take note
Read more

An Interview with Pakistani Data Scientist : Dr. Zeeshan Ul Hassan Usmani

-
Image
Dr. Zeeshan-ul-Hassan Usmani, the name known for Data Science, Predictify me, Eisenhower fellowship  and most importantly motivation for many of the students. He is the Author of book like  (C++) ++سی/سی ,  Bit Coin Block Chain aur Crypto Currency بٹ کوائن، بلاک چین اور کرپٹو کرنسی  and many other, you can visit them here . Today "Mainly: The Software Engineering Blog" asked him some of the questions, as an interview and we are very glad that he gave his precious time to answer them. It was kinda "Remote Interview"... not the traditional one.. The Interview Question:  How can you describe " Dr. Zeeshan ul Hassan Usmani " ? ANSWER: I am a shameless idealist. We are all idealists at some stage of our lives but then it fades away and we live as a mediocre. I don’t want it to fade away. I remind myself almost every day that I need to make my today better than my yesterday, and the challenge is keep getting harder J . We only need to co
Read more

Hollow Diamond

-
Image
Drawing different shapes with the help of coding is quite  enjoyable and interesting. Mostly the first semester students of software engineering encounter with this. so, let us learn, how to draw a hollow diamond using python? First of all declare variables: Diamond consists of two cones , upper cone with pointed top and lower cone with pointed bottom . so let us write the code for the upper cone, but the cone must be hollow: The resultant of this code is as under: Now, write the code for lower hollow cone: The output for this code is: Now, run both the codes simultaneously, and the output is: the reason for this output: This is one of the possibilities of writing code, to get this output. There might be other ways of doing the same task. Keep finding and trying different ways of coding. And do remember: Programming language doesn't matter but logic matters . So, work mainly on logic building .
Read more