Nowadays, it’s hard to imagine our life without search systems. “If you don’t know something, google it!” – is one of the most popular maxims in our life. But how many people use Google in an optimal way? A lot of developers use google commands to get needed answers as fast as it possible.
Even this is not enough today! Large and small companies need terabytes of data to make their business profitable. It’s necessary to automate the search process and make it reliable to satisfy the user with fresh news, updates or posts. In today’s article we will consider a very helpful tool – Real-Time Crawler (RTC) for the collection of fresh data. Let’s start!
The web scraping topic has been actively growing in popularity for dozens of years now. Freelance sites are overcrowded with orders connected with this contradictory data extracting process. Today we will combine two new and revolutionary directions in web development. So, let’s consider an elegant and modern way to scrape data from websites with Node.js! 
One of these tasks is scraping javascript sites, those that output data using JavaScript. Facing this task, classic scrapers (not all of them though) ignore JS-data and continue their own life-cycle. However, when this little defect becomes a big trouble, developers all over the world take measures. And they did it! Today we consider one of the most awesome tools which scrapes JS-generated data – Splash.
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SQL (Structured Query Language) is a powerful language for working with relational databases, but quite a few people are in fact ignorant of the dark side of this language, which is called SQL-injection. Anyone who knows this language well enough can extract the needed data from your site by means of SQL – unless developers build defenses against SQL-injection, of course. Let’s discuss how to hack data and how to secure your web resource from these kinds of data leaks!