LocalStorage Vs. SessionStorage: Compare Difference

In this article, we will learn about comparing Difference between localStorage and sessionStorage. Websites hosted on a browser have no capacity of having any memory to store user's data. A user visiting from one page to another page on a website will be treated as a new user every time. The browser provides different types of storage mechanisms (localStorage, sessionStorage, cookies) to overcome this issue. Storage mechanism enables the website you are visiting to keep track of your movement from one page to another page so that the same information doesn't get asked which is already given to the website.

localStorage, sessionStorage, and cookies are all client storage solutions that store in a single file in the user's system. Session data is stored on the server where the application/website is hosted. localStorage and sessionStorage, part of the web storage API, are two awesome tools to save the data in format of key/value pairs locally.

In this article, We will try to understand the difference between localStorage and sessionStorage.

What is localStorage?

It is a type of web storage that allows websites/applications to store and access data in the browser with no expiration date. This means the data stored in the browser will persist even after the browser window has been closed.

Syntax:

// Save data to localStorage
localStorage.setItem('key', 'Value');
 
// Get saved data from localStorage
let lastname = localStorage.getItem('key');
 
// Remove saved data from localStorage
localStorage.removeItem('key');
 
// Remove all saved data from localStorage
localStorage.clear();

What is sessionStorage?

The sessionStorage object stores data for only one session, Meaning the data is deleted when the browser tab is closed.

Syntax:

 
// Save data to sessionStorage
sessionStorage.setItem('key', 'value');
 
// Get saved data from sessionStorage
let lastname = sessionStorage.getItem('key');
 
// Remove saved data from sessionStorage
sessionStorage.removeItem('key');
 
// Remove all saved data from sessionStorage
sessionStorage.clear();

Difference between localStorage and sessionStorage

 

localStorage

• data stored with localStorage has no expiration date, and gets cleared only through JavaScript, or clearing the Browser cache / Locally Stored Data.
• The storage limit is the maximum amongst the three.
• The data stored in localStorage persists until explicitly deleted. Changes made are saved and available for all current and future visits to the site.
• It works on the same-origin policy. So, data stored will only be available on the same origin.

sessionStorage

• It stores data only for a session, meaning that the data is stored until the browser (or tab) is closed.
• Data is never transferred to the server.
• Changes are only available per window (or tab in browsers like Chrome and Firefox). Changes made are saved and available for the current page, as well as future visits to the site on the same window. Once the window is closed, the storage is deleted.

Conclusion:

localStorage and sessionStorage are performing similar tasks but with some very basic differences.

Original article sourced at: https://jsonworld.com

 

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How native is React Native? | React Native vs Native App Development

If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?

In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.

A brief introduction to React Native

Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.

React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.

Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.

Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.

The popularity of React Native comes from its advantages. Some of its advantages are as follows:

• Performance: It delivers optimal performance.
• Cross-platform development: You can develop both Android and iOS apps with it. The reuse of code expedites development and reduces costs.
• UI design: React Native enables you to design simple and responsive UI for your mobile app.
• 3rd party plugins: This framework supports 3rd party plugins.
• Developer community: A vibrant community of developers support React Native.

Why React Native is fundamentally different from earlier hybrid frameworks

Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.

React Native is very close to native. Consider the following aspects as described on the React Native website:

• Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
• Near-native user experience: React Native provides several native components, and these are platform agnostic.
• The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.

Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.

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Lean vs Agile vs Waterfall | What is Lean | Difference between Waterfall and Agile

In this video you will learn the difference between waterfall and agile model, what is lean, lean vs agile vs waterfall differences in detail.

Why DevOps is important?

DevOps implementation is going through the roof with most of the largest software organizations around the world invested heavily in its implementation. The core values of devops is effectively based on the Agile Manifesto but with one slight change which moves the focus from creating a working software to one that is more interested in the end-to-end software service mechanism and delivery.

#agile vs waterfall vs lean #Learn Lean #What is Lean #Waterfall vs Agile #Difference Between Waterfall and Agile

PWA vs Native App: Which Is Better Option In 2021?

Every year, the world is expanding with the launch of new smartphones and other gadgets available in the market. According to Statista, more than 50% of the population will be using smartphones by the end of 2021.

Hence, businesses worldwide have understood the importance of smartphones and are joining the mobile industry by launching native apps.

Apart from native apps, progressive web apps is another technology that is gaining a lot of attention among businesses. Moreover, various leading companies worldwide have openly accepted PWA and built progressive web apps.

Now, the question arises, how is PWA different from the native apps? Read More

#pwa vs native #pwa vs native app #progressive web app vs native #progressive web app vs native app #pwa vs native app performance

Hadoop vs Spark | Hadoop MapReduce vs Spark

In this video on Hadoop vs Spark you will understand about the top Big Data solutions used in the IT industry, and which one should you use for better performance. So in this Hadoop MapReduce vs Spark comparison some important parameters have been taken into consideration to tell you the difference between Hadoop and Spark also which one is preferred over the other in certain aspects in detail.

Why Hadoop is important

Big data hadoop is one of the best technological advances that is finding increased applications for big data and in a lot of industry domains. Data is being generated hugely in each and every industry domain and to process and distribute effectively hadoop is being deployed everywhere and in every industry.

#Hadoop vs Spark #Apache Spark vs Hadoop #Spark vs Hadoop #Difference Between Spark and Hadoop #Intellipaat

CockroachDB vs (MySQL, PostgreSQL, MongoDB & Cassandra)

An introduction to CockroachDB

If you are an entrepreneur or an enterprise IT leader, then you need to plan the technology stack for your software development project. You need to choose the right database for your project. If you are developing a heavy-duty transaction processing system or a high-demand analytics system, you will likely use an RDBMS (Relational Database Management System). You can choose one from several popular RDBMSs.

However, do you want an assurance that your data in an RDBMS will survive even large-scale failures in application systems and servers? This narrows the choice. This is where CockroachDB becomes important. This relatively new RDBMS offers a high degree of survivability to your data. In this article, we review CockroachDB and its features. We assess its pros and cons. Subsequently, we review its use cases. Finally, we compare CockroachDB with some of the popular databases. Read on.

#cockroachdb vs cassandra #cockroachdb vs mongodb #cockroachdb vs mysql #cockroachdb vs postgres #mysql