1 00:00:00,880 --> 00:00:04,240 In this video, we'll be discussing about cookies and sessions. 2 00:00:05,110 --> 00:00:10,660 So cookies and sessions is the most, you know, the important thing and also the famous technology 3 00:00:10,660 --> 00:00:14,590 that will be using by many big companies like Amazon, Flipkart, etc.. 4 00:00:15,370 --> 00:00:17,380 So what do you mean by cookies and sessions? 5 00:00:17,950 --> 00:00:25,120 So for that, let's say we're having a browser and a server. 6 00:00:27,670 --> 00:00:29,350 So let me open up and to. 7 00:00:30,610 --> 00:00:30,910 Yeah. 8 00:00:32,250 --> 00:00:33,560 And the next clearly. 9 00:00:40,450 --> 00:00:40,840 So. 10 00:00:43,190 --> 00:00:44,420 Just a second. 11 00:00:50,530 --> 00:00:52,900 So here you have a browser. 12 00:00:54,670 --> 00:00:55,330 And a sort. 13 00:00:56,580 --> 00:00:56,910 Right. 14 00:00:57,540 --> 00:01:02,610 So when you're sending that request to the server. 15 00:01:05,630 --> 00:01:06,830 Ben, my handwriting. 16 00:01:07,550 --> 00:01:13,160 So when you get to get requests for the server, you'll get a response, right? 17 00:01:14,920 --> 00:01:18,670 Similarly, when you send a post request for the satellite. 18 00:01:21,730 --> 00:01:23,060 Not going to get a response. 19 00:01:24,210 --> 00:01:31,170 So, for example, consider a case like Amazon in Amazon, you will add some products to your cart, 20 00:01:31,200 --> 00:01:31,500 right? 21 00:01:31,950 --> 00:01:33,570 Relax and product to your cart. 22 00:01:34,140 --> 00:01:39,870 So after a few days whenever, if you did not complete the payment, then after a few days when you 23 00:01:39,870 --> 00:01:44,220 come back and again log in, then the data will be still present in the carts. 24 00:01:44,610 --> 00:01:45,990 So this is what cookies does. 25 00:01:46,410 --> 00:01:48,360 So they're not making a post request. 26 00:01:50,390 --> 00:01:52,010 Of adding a product to the cart. 27 00:01:52,190 --> 00:01:58,220 That means this post request will be adding, you know, adding the. 28 00:02:01,340 --> 00:02:08,600 Product that I've got so that Bush, Jeb Bush will be adding, so let me tape it, but a post request 29 00:02:08,600 --> 00:02:10,910 will be adding the product. 30 00:02:13,860 --> 00:02:14,380 The court. 31 00:02:16,520 --> 00:02:22,820 So when we added this product to the cart at this time, at this moment in time, the Amazon service 32 00:02:22,820 --> 00:02:29,690 will create a cookie that contains that data and it would end when it responds to the post request that 33 00:02:29,690 --> 00:02:35,300 Cookie gets along, gets sent along and grows and gets to preserve that cookie. 34 00:02:35,840 --> 00:02:42,650 So basically, what's happening is we are sending this post request then as a response, as a response. 35 00:02:44,110 --> 00:02:45,370 The Amazon Sidewalk. 36 00:02:47,500 --> 00:02:49,510 Will send a cookie. 37 00:02:51,800 --> 00:02:52,610 Containing. 38 00:02:56,630 --> 00:03:00,350 Containing the information on the products of the data. 39 00:03:01,070 --> 00:03:01,460 OK. 40 00:03:01,550 --> 00:03:03,340 And it tell the browser to safe. 41 00:03:04,130 --> 00:03:08,390 It will tell the browser itself that cookie. 42 00:03:10,900 --> 00:03:12,460 To same that cookie. 43 00:03:13,580 --> 00:03:13,880 Right. 44 00:03:15,280 --> 00:03:21,070 So that when we come after a long time, that Cookie still saved on that browser, on your browser. 45 00:03:21,490 --> 00:03:27,640 So the next time when we make a great request to the Amazon servers, that Cookie gets along, gets 46 00:03:28,480 --> 00:03:34,480 that cookie gets sent along with that, get requested Amazon server to allow the server to be able to 47 00:03:34,480 --> 00:03:39,160 identify who you are and see if you had any previous sessions on Amazon or not. 48 00:03:39,610 --> 00:03:44,260 So basically, again, after a few days, you are sending a request, then you are sending this cookie 49 00:03:44,260 --> 00:03:47,710 also to that Amazon server through your get request. 50 00:03:48,190 --> 00:03:52,690 And then they will see what is the data that you're having and then they'll send the data back to you. 51 00:03:53,590 --> 00:03:59,110 So there are lots of different types of cookies, but the types of cookies we are going to be looking 52 00:03:59,110 --> 00:04:02,560 at are the ones that are used to establish and maintain its session. 53 00:04:03,130 --> 00:04:03,430 OK. 54 00:04:03,640 --> 00:04:05,200 So basically, I understand what the cookies are. 55 00:04:05,200 --> 00:04:11,170 Cookies will be having some information like, for example, think about it, the cookies that you eat. 56 00:04:11,600 --> 00:04:13,090 There'll be something on the top. 57 00:04:13,090 --> 00:04:15,400 And then if you open it, there'll be some chocolate chips like that. 58 00:04:15,880 --> 00:04:21,830 So basically, that is what it would have to information and this information in the service to the, 59 00:04:21,830 --> 00:04:22,090 you know. 60 00:04:22,360 --> 00:04:27,580 But it does mean the reports are that you are accessing what data they should render to that particular 61 00:04:27,580 --> 00:04:30,040 user based on the information and the cookie. 62 00:04:30,790 --> 00:04:32,350 So that is the importance of the cookies. 63 00:04:32,920 --> 00:04:34,690 So what is session when? 64 00:04:34,690 --> 00:04:38,080 See what is session in the next video and also see how it is possible? 65 00:04:38,380 --> 00:04:38,770 Yes. 66 00:04:39,130 --> 00:04:39,580 Thank you.