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Desktop Apps using Electron JS with centralized data control
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When there is a requirement for having local storage for the desktop application context and data needs to be synchronized to central database, we can think of Electron with PouchDB having CouchDB stack. Electron can be used for cross-platform desktop apps with pouch db as local storage. It can sync those data to centralized database CouchDB seamlessly so any point desktop apps can recover or persist the data.
In this article, we will go through of creation of desktop apps with ElectronJS, PouchDB and show the sync happens seamlessly with remote CouchDB.
ElectronJS can be installed easily through
npm install --save-dev electron
It can be installed through npm packages or can be done by simply invoking
CouchDB can be installed remotely as centralized document store. It will be used to authenticate and complete control of all the desktop data. PouchDB and CouchDB seamlessly replicate bi-directionally with Rest API protocol. It is developed by Apache software foundation and licensed under Apache-2.0 license. Source code is available in Github. The Couch Replication Protocol lets your data flow seamlessly between server clusters to mobile phones and web browsers, enabling a compelling offline-first user-experience while maintaining high performance and strong reliability. CouchDB comes with a developer-friendly query language, and optionally MapReduce for simple, efficient, and comprehensive data retrieval.
Installation will be straight walk through of the installation guide in the CouchDB site.
Electron is an open source library to build native applications which also works as cross-platform desktop applications. It provision operating system functionalities with help of node integration. In this article, we will go through how to access the Operating System variables, Inter system communication, System dialog, Access files, folders also their statistics.
Web developers come across scenarios like web application completely breaks when workstation goes offline. Likewise to get into our application, every time we need to open a browser and then access it. Instead if it is in app, it will be easy to access for end-user. Push notifications similar to email client need to be done through web application. All these are addressed by a magic called service worker.
Text editors are mainly used by programmers and developers for manipulating plain text source code, editing configuration files or preparing documentation and even viewing error logs. Text editors is a piece of software which enables to create, modify and delete files that a programmer is using while creating website or mobile app.In this article, we will discuss about top 7 all-round performing text editors which is highly supportive for programmers.
Notifications is a message pushed to user's device passively. Browser supports notifications and push API that allows to send message asynchronously to the user. Messages are sent with the help of service workers, it runs as background tasks to receive and relay the messages to the desktop if the application is not opened. It uses web push protocol to register the server and send message to the application. Once user opt-in for the updates, it is effective way of re-engaging users with customized content.
Nowadays on the web, Shopping is one of the most popular activities. Everyone can shop at their recess, anytime from anywhere. However, this is interesting that anyone can have their pages built to display their favourite products and services.
Univention Corporate Server is an open source identity management system, an IT infrastructure and device management solution and an extensible platform with a store-like App Center that includes tested third party applications and further UCS components: This is what Univention combines in their main product Univention Corporate Server, a Debian GNU/Linux based enterprise distribution. This article provides you the overview of Univention Corporate Server, its feature and installation.
ONLYOFFICE Document Server is a free collaborative online office suite including viewers and editors for texts, spreadsheets and presentations, fully compatible with Office Open XML formats (.docx, .xlsx, .pptx). This article provides you the overview of ONLYOFFICE Document Server, its features, installation and integration with Nextcloud and ownCloud.
Enterprise search software should be capable to search the data available in the entire organization or personnel desktop. The data could be in File system, Web or in Database. It should search contents of Emails, file formats like doc, xls, ppt, pdf and lot more. There are many commercial products available but LucidWorks and SearchBlox are best and free.
Redis is an open source (BSD licensed), in-memory data structure store, used also as a database cache and message broker. It supports data structures such as strings, hashes, lists, sets, sorted sets with range queries, bitmaps, hyperloglogs, geospatial indexes with radius queries and streams. This article explains about how to communicate with Redis using Java client Jedis.
I have been writing on the desktop image processing application. At the version 1.0, I use the octree color quantization algorithm to reduce image to 256 colors, which is highly memory efficient with each pixel assigned the color at the center of the octree bin in which it falls. On the other hand, generates the palette using the distribution of colors in the image, but it does not consider the frequency of color. This means that if an image is composed of similar colors overall but has many different low-frequency colors or noise, octree's results can be very poor.
JHipster is one of the full-stack web app development platform to generate, develop and deploy. It provides the front end technologies options of React, Angular, Vue mixed with bootstrap and font awesome icons. Last released version is JHipster 6.0.1. It is licensed under Apache 2 license.
Django is a high-level Python Web framework that encourages rapid development and clean, pragmatic design. It is pre-loaded with user authentication, content administration, site maps, RSS feeds and many more tasks. Security features provided are cross site scripting (XSS) protection, cross site request forgery protection, SQL injection protection, click-jacking protection, host header validation, session security and so on. It also provides in built caching framework.
Nuster is a simple yet powerful web caching proxy server based on HAProxy. It is 100% compatible with HAProxy, and takes full advantage of the ACL functionality of HAProxy to provide fine-grained caching policy based on the content of request, response or server status. This article gives an overview of nuster - web cache proxy server, its installation and few examples of how to use it.
You may require GBs of data to do performance or load testing. How your app behaves when there is loads of data. You need to know the capacity of your application. This is the frequently asked question from the sales team "The customer is having 100GB of data and he wants to know whether our product will handle this? If so how much RAM / Disk storage required?". This article has pointers to the large data corpus.
The newly introduced concept of dependency injection in Angular version 2.0 makes it an attractive front-end technology all because of one amazing feature called 'Multi-Providers'. In general, it allows the users to attach certain operations by themselves and a few plugin custom functionality which is not required in our mobile app use case.
In 32 bit operating system, Dates are calculated using number of seconds differece between 1 January 1970 and current date. This difference will reset to 00:00:00 on January 2038. This is called year-2038 Bug.
Lucene is a search library built in Java. Solr is a web application built on top of Lucene. Certainly Solr = Lucene + Added features. Often there would a question, when to choose Solr and when to choose Lucene.