Original subtitles

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Welcome back!

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Good job! You've made it this far and you're probably asking yourself, "Andrei,

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this has been really good really informative.

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But where is the coding; I want to start building some websites."

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And I know, I know we'll get there don't worry.

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But without even realizing it you just learned some really really important fundamental skills, and something

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that will take you very very far in the career of a web developer because now you know how to improve

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website performance without a single line of code.

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And just so you know we're gonna get a little silly here.

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We're actually going to make sure that you remember these fundamental skills every time throughout these

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lessons there's going to be chunks of very important lessons and to symbolize how important they are.

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I'm going to get Jean-Claude Van Damme's help.

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So again this is an important lesson.

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This is an important fundamental, web developer concept.

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So Jean-Claude Van Damme, how important is it?

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All right.

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So as you can see a very important concept and what is it?

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Well like I said without writing a single line of code you now know how to improve a website's performance

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so let's think about this.

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There's three things.

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We send 'google.com', we talk to Google servers, and we get these files back. So just looking at this and

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looking at what you've learned so far what's one thing that would make sure that this this process would be fast?

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Let's look at the first one I'm going to give you a second to think.

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Hopefully you get it.

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The first one is location of the server.

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We saw how big the Internet backbone is.

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So if the servers are really really close to you, let's say you're in the States and the servers are

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just a couple of kilometers away that hop is going to be really really fast versus if it's all the way

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across the globe.

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So location of the server is important.

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And we'll talk about these and how big companies use these to their advantage later on.

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So that makes sense.

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Let's look at the next one.

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So the next one is how many trips.

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So hopefully, ideally we just have one trip to the Google servers and Google servers send us all the

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files that we need back.

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But as we know there's new pages there are searches so this communication with Google is back and forth,

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back and forth.

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And the less trips we have, the faster that we would be able to to get the files.

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So how many trips. And then finally size of files again if this HTML file, CSS file, or Javascript

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file is massive and it's you know 100 megabytes.

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Well that's going to be a lot slower to transfer over the Internet than it is, if it was just a couple

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of kilobytes.

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So there it is.

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These three things are something that you'll take with you and you'll realize that every time you're

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building an application or web site you're going to be thinking about these things and these are going

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to help you make sure that you have a performant, fast web site and we're going to take these with us

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as we go on throughout the course. Talk to you soon.