1 00:00:00,390 --> 00:00:07,710 In this video we are going to talk about Amazon asks two types, which are the standard queues and five 2 00:00:07,710 --> 00:00:08,310 queues. 3 00:00:09,260 --> 00:00:13,550 So basically Amazon provides two types of messaging queues. 4 00:00:13,580 --> 00:00:15,560 Standard queue, five queue. 5 00:00:15,830 --> 00:00:17,540 You can see the image on the slide. 6 00:00:17,570 --> 00:00:18,710 We have two types of. 7 00:00:18,740 --> 00:00:21,060 Q And if you talk about the standard. 8 00:00:21,080 --> 00:00:24,490 Q Basically, it's the default. 9 00:00:24,500 --> 00:00:27,140 Q type offered by the Amazon case. 10 00:00:27,410 --> 00:00:33,680 This provide unlimited throughput, best effort ordering and at least one message delivery and some 11 00:00:33,680 --> 00:00:34,970 that could stand out. 12 00:00:35,000 --> 00:00:40,490 Q Is our default queue type in the Amazon case if you look at the five? 13 00:00:40,580 --> 00:00:46,970 Q Five, four means first in, first out, which simply means that message will be ordered in the Q 14 00:00:46,970 --> 00:00:51,500 and first message to arrive in the Q will be the first to leave the Q. 15 00:00:52,160 --> 00:00:57,980 So this is the two types in the Amazon case standard and Piper Q's. 16 00:00:58,370 --> 00:01:03,900 So let me evaluate them on various parameters that we specified earlier in this post. 17 00:01:03,920 --> 00:01:12,680 So basically we can say that the message ordering situation so is standard SKUs provide best offer ordering. 18 00:01:12,710 --> 00:01:17,990 In other words, it tries best to deliver a message in same order as they are sent. 19 00:01:18,020 --> 00:01:23,210 However, occasionally more than one copy of message might be delivered out of the order. 20 00:01:23,780 --> 00:01:27,160 But five accused offers first in, first out delivery. 21 00:01:27,410 --> 00:01:31,920 The order in which message are sent and receives is strictly preserved. 22 00:01:31,940 --> 00:01:35,600 As you can see in the image in the previous slide. 23 00:01:35,840 --> 00:01:39,350 And the second item that we can consider delivery. 24 00:01:40,500 --> 00:01:46,470 So standard queue guarantees at least once delivery, but sometimes duplicate or more than one copy 25 00:01:46,470 --> 00:01:47,970 of message can be delivered. 26 00:01:48,510 --> 00:01:54,720 Five accused ensure a message is delivered exactly once and remains available until a consumer processes 27 00:01:54,720 --> 00:01:55,740 and deletes it. 28 00:01:56,160 --> 00:02:03,120 Duplicates are not introduced in the queue of the five queues and we can also compare throughput of 29 00:02:03,120 --> 00:02:04,290 these queue types. 30 00:02:04,680 --> 00:02:07,470 Standard queues offers unlimited throughput. 31 00:02:07,470 --> 00:02:12,990 In other words, it supports nearly unlimited number of transactions per second per API calls. 32 00:02:13,380 --> 00:02:20,880 But five accused, on the other hand, are limited to 300 transactions per second per API action without 33 00:02:20,880 --> 00:02:26,670 batching and 3000 message with batching one new batch type message per operation. 34 00:02:27,330 --> 00:02:29,790 So that means five focus has some limitations. 35 00:02:31,940 --> 00:02:37,640 If you look at the use case of the queues, we can always use standard queue as long as you are able 36 00:02:37,640 --> 00:02:40,970 to process the case and out of order methods. 37 00:02:41,240 --> 00:02:47,330 But five accuse can be used when ordering of message is must end up the case are not accepted at any 38 00:02:47,330 --> 00:02:47,780 cost. 39 00:02:50,230 --> 00:02:56,890 So the standard to provide at least once delivery, which means that each message is delivered at least 40 00:02:56,890 --> 00:02:57,520 once. 41 00:02:58,580 --> 00:03:05,930 Five accuse provide exactly once processing, which means that each message is delivered once and remains 42 00:03:05,930 --> 00:03:07,820 available until the consumer process. 43 00:03:07,820 --> 00:03:13,070 It and delete its duplicates are not introduced in the queue of the five focus.