How to connect to a database? How to read or write data?

How to make a website with dynamic content? We need to store the content somewhere. And a good, searchable storage is a database. Almost every webservice needs a database. But how do connect to the database? And how do we read and write the data?

Use automated UI Test, which is possible with the Selenium library and a browser driver. The browser driver allows us to run actions in a browser while writing code. The Selenium library is an interface to connect many browsers with the same code base. So now we are able to code a simple test, where a robot is automatically clicking through the website and trying out the login functionality. This technique may also apply to test other important and high priority UI features.


Test login functionality after every code change.

Testing the very common functionality of "login"/"sing in" might be exhausting if we have to test it after every change in the project. Entering the credentials every time, or even if they are stored in the browser, one has to click through it. There must be some better way...

How to disable the mobile version of a website when using a smartphone

In these days it is normal that many web pages have a computer version but also a mobile version.If a website has a mobile version, it is usually shown by default once it detects that the user is visiting from a mobile device, and it is very helpful because it will allow the web to be seen better, easier to navigate and much less resources to be downloaded . However, this is not always the case; Some mobile versions are worse, difficult to understand and take too many clicks to see some information. So, in some cases it will be better to go back to the desktop version.

Multiple websites on a single host with Docker

It is not possible to run multiple web applications in Docker at the same time. Since all of them use port 80, only one Docker instance is accessible.

Browsersync is an automation tool that can watch files for changes and inject them into a web page without reload.


  • Install Node.js
  • Install Browsersync
    npm install -g browser-sync
  • Start Browsersync
    browser-sync start --proxy "myproject.dev" --files "css/*.css"

Browsersync will create a proxy that will wrap your vhost myproject.dev with a proxy URL.

It can also be used with gulp:

var browserSyncWatchFiles = [
var browserSync = require('browser-sync').create();
var browserSyncOptions = {
proxy: "myproject.dev",
notify: false
gulp.task('browser-sync', function () {
browserSync.init(browserSyncWatchFiles, browserSyncOptions);


Speed up webpage testing time

Testing web pages can be really time consuming. Every CSS, HTML or image change needs a browser refresh. It would be way better if the reloads could be avoided.

Deployment using containers

This can be done by performing several steps:
1. Install Docker on local and remote machine
2. Create Dockerfile on local machine and set all enviroment dependencies/variables (and add website to resources)
3. Build Docker image from Dockerfile and run docker container from that image
4. Test website

Than transfer Dockerfile from local machine to remote machine and repeat steps 3. and 4.


Firefox can not be open after you install it on MaC

After you download and install Firefox on your Mac you may see the error message, "Firefox.app" . What to do ?

EPM Registry Initialization Fails

The EPM Registry initialization fails in the BIDomain domain. Oracle Fusion General Ledger and Oracle Fusion Customer Relationship Management (CRM) code running within the FinancialsDomain and CRMDomain domains, respectively, has direct integration with the EPM Registry API and consumes EPM Security Component, which also tightly integrates with the EPM Registry API. When EPM Registry initialization fails, it greatly impacts communication with downstream EPM products in the BI domain.


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