Why we use mongoDB OR why not ?

MongoDB is not a key/value store, it’s quite a bit more. It’s definitely not a RDBMS either. I haven’t used MongoDB in production, but I have used it a little building a test app and it is a very cool piece of kit. It seems to be very performant and either has, or will have soon, fault tolerance and auto-sharding (aka it will scale). I think Mongo might be the closest thing to a RDBMS replacement that I’ve seen so far. It won’t work for all data sets and access patterns, but it’s built for your typical CRUD stuff. Storing what is essentially a huge hash, and being able to select on any of those keys, is what most people use a relational database for. If your DB is 3NF and you don’t do any joins (you’re just selecting a bunch of tables and putting all the objects together, AKA what most people do in a web app), MongoDB would probably kick ass for you.

Then, in the conclusion:
The real thing to point out is that if you are being held back from making something super awesome because you can’t choose a database, you are doing it wrong. If you know mysql, just use it. Optimize when you actually need to. Use it like a k/v store, use it like a rdbms, but for god sake, build your killer app! None of this will matter to most apps. Facebook still uses MySQL, a lot. Wikipedia uses MySQL, a lot. FriendFeed uses MySQL, a lot. NoSQL is a great tool, but it’s certainly not going to be your competitive edge, it’s not going to make your app hot, and most of all, your users won’t give a shit about any of this.
What am I going to build my next app on? Probably Postgres. Will I use NoSQL? Maybe. I might also use Hadoop and Hive. I might keep everything in flat files. Maybe I’ll start hacking on Maglev. I’ll use whatever is best for the job. *If I need reporting, I won’t be using any NoSQL.* If I need caching, I’ll probably use Tokyo Tyrant. If I need ACIDity, I won’t use NoSQL. If I need a ton of counters, I’ll use Redis. If I need transactions, I’ll use Postgres. *If I have a ton of a single type of documents, I’ll probably use Mongo.* If I need to write 1 billion objects a day, I’d probably use Voldemort. If I need full text search, I’d probably use Solr. If I need full text search of volatile data, I’d probably use Sphinx

Comments

Post a Comment

Popular posts from this blog

Angular 4 + Cordova Boilerplate ::: Hybrid Mobile Application

Angular 4 + Cordova Hybrid Mobile App set up : ng-four-hybid-app : Angular 4 + Cordova boilerplate This project is using Angular 4 + Cordova boilerplate configurated. You can start building your great Hybrid Cordova Mobile Apps in Angular 4. Installation Install Node.js from:  https://nodejs.org/en/download/ Install Cordova using:  npm install -g cordova Clone ngCordova repository:  https://github.com/mithabavkar/ng-four-hybid-app.git Go to ngCordova repository:  cd project_name Install dependencies:  npm install Development server Development project folder is  src/ . You should start building your Angular 4 app there! Run  ng serve  for a dev server. Navigate to  http://localhost:4200/ . The app will automatically reload if you change any of the source files. Build Angular project Run  ng build  to build the Angular project. The build artifacts will be stored in the  www/  directory. Use the  -prod  flag for a production build. Adding Cordova platform
Read more

In MVC 4 Save and Retrieve cookies

In MVC 4 How to save and retrieve cookies. Follow these steps for Save Cookies :- 1. User validation successful then save UserID or UserName In cookies .In Login controller write these code: Code: var UserIDCookies = new HttpCookie("UserID",UserID); // Define cookies name UserIDCookies.HtpOnly=true; // assign UserID for save in cookies Response.Cookies.set(UserIDCookies); // User ID set in cookies 2. When ever you want to Retrieve UserID from cookie. Code: var UserID - Request.cookies.Get("UserID").value; In simple bracket of "UserID" name match with stored cookie name. cookie value store in Variable called UserID. You get UserID from cookies and store in variable. You want to convert string to int in MVC just write single line code. int ID = Convert.ToInt32("UserID");
Read more