Publish-Subscribe Pattern vs Message Queues vs Request Response (Detailed Discussions with Examples)

[@hnasr]

Fundamentals of Backend Engineering backend.win

[@thomasmartres2963]

Thank you Hussein for all these resources, you're a proper G.

[@riderprovider6213]

Came from LinkedIn for watching this awesome explanation

[@SyedAli-rl8de]

You are a blessing.these contents for free is life

[@AshutoshAnandashu]

Such a coincidence, was just learning about Pub/Sub and Cloud Tasks (Queues) in GCP. This is valuable.

[@ritwizsinha1261]

Same happened with me, I was deciding whether to use pub sub vs queue in a project

[@murugankannan7285]

Same for me

[@ritwizsinha1261]

Do not go to flixzone, its a shady website, the above two are bots

[@MT87840]

Not a coincidence, they're spying on us! :D

[@erikslorenz]

This is by far my fav youtube channel

[@hnasr]

🙏

[@erikslorenz]

@@hnasr no one else ever talks about the back end!! This is required viewing for the guys I hire.

[@mannion1985]

Put this in my watch later just dropped in to say you are doing amazing work with your channel.

[@maheshtenapali8938]

I have a user story for testing next week to work on pub sub using Kafka......it's very useful.... this session is useful...I gained some knowledge

[@abhay8437]

Half of the comments be like: Damn, the timing of this video, I was just reading about this. Holy mother of coincidences. Also, it's not a 44 minutes lecture, it's [44 / play speed] minutes lecture. I recently gave a system design interview, had this been uploaded earlier, I would have nailed it.

[@raochaudhriIT]

Thanks!

[@prathameshmahankal4180]

This content is gold.

[@marouanebenmoussa1289]

U got me in that's what she said ! thank you for these valuables videos

[@hafizhabdillah3030]

thanksss broo, really enjoy how you explain all these things

[@hafizhabdillah3030]

kzbin.info/www/bejne/eom3eZVvidZ9hdU can i ask ? ive built message queue service using rabbitMq. as you said, once the request has been received by the server, we can sent the response to the client with identifier, so they can come back to check the condition for that request. talking about channel, so in this approach you talk about, we set the client to subs to same channel as the server use ? and there wont be any request response to check the condition for that request ? . for my case, iam still using request response for the client to check the condition of thier request before, and for the ux its really annoying for me (?) because they have to refersh the request to check the updates

[@hanifali3396]

28:50 "Obviously, this guy has to be up all the time.... That's what she said" XD

[@varunupadhyay3836]

Thank you so much for this. Really good overview.

[@colinmaharaj]

I did my own disk back queues years ago. It uses a get/set/delete logic. The producer sets a value, the consumer gets it and the consumer deletes it once it has validated it has gotten the data correctly. Also it's FIFO based and there is no data loss in a power outage

[@assimd7790]

Very informative video.

[@cyrilogoh6171]

2 courses finished in 30 min 😅😅😅thanks

[@ritwizsinha1261]

Great Hussein, read my mind

[@yangbi6788]

I'm so distracted by the jokes you put into those videos. 28:48 "Obviously this guy has to be up all the time, that's what she said." lmao.

[@hnasr]

Distraction is good 😌

[@chiefolk]

the bicycle animation was epic😂😂

[@mmmm-wm8ci]

How does polling have effect on memory, isn't it same as pull

[@HellGuyRj]

Heelo Sir. I have a question. Are you a god? cuz ur contents are godly.

[@Gerald-iz7mv]

can you use rabbitmq and kafaka here? im asking because kafka is more for streaming? or can you tune kafka to work like rabbitmq?

[@hemanthaugust7217]

for request-response, you mentioned that client/server have to be running as a Con. When you use Queue, both Client & Queue have to be running. So, we just shifted the point of failure from server to queue, that's all. How is this not a con for MQ?

[@ibknl1986]

What a wonderful way of explaining.

[@mohammadakbari5180]

Awesome bro. keep going.

[@adrianfgutierrez2836]

Hussein, you have an opinion about Mercure?

[@iamrafiqulislam]

Awesome Roses!!!

[@04minutes53]

Im a fan of your knowledge.please use images more,if possible animations like tech with Nana channel.

[@alek282]

For request/response model, do we not solve the issue of blocked requests with event based architectures? ie in JavaScript you encapsulate requests / responses with promises. So if you send a request, you are free to do other things on the client. You are still blocked on that particular request in a sense but you are free to report some feedback to the user

[@hnasr]

Good question, javascript promises only provide a client side asynchronous behavior, the backend is still synchronously processing your request. This video describes the asynchronousity on the backend And if you are taking about JS promises on the backend than it depends on workload. Most workloads will go on the mainthread which will still execute requests synchronously and block. More here kzbin.info/www/bejne/nX7XlJuIpMl2aKs

[@alek282]

@@hnasr Thank you Hussein! Just to let you know im framing the "Good question" part :)

[@a7md940]

انت راجل ميه ميه.. سؤال.. بالنسبة للمثال بتاع اليوتيوب uploading video لو الففيديو حجمه كبير 2جيجا او 4 مثلا هيكون سهل على ال message broker يبعته في ال queue لل consumer ؟ اقصد حجم الملف مش هيعمل مشكلة؟

[@hnasr]

سؤال ممتاز، يعتمد اذا قررت حفظ الفيديو في المسج كيو ام لا. شخصيا افضل حفظ الملف في blob ستور ووضع وصله في الكيو

[@a7md940]

@@hnasr لو عملت موضوع الوصله ده. هل هحتاج shared storage عشان ال distributed services؟ ولا السؤال بتاعي غلط اصلا بسبب عدم فهمي الكامل للموضوع؟

[@robertmazurowski5974]

ME: "Hussein are you telling me there is something better than that where the client can go offline and the server can go offline, and still they can communicate?" Hussein: Yes, Quantum-Psychic-Biological computer. It is not on or off because it is biological, It is multidimensional and communicates with brainwaves even between dimensions. Happy April fools!

[@khushbuchoudhary5185]

I became a member today in order to download the slides for this course but I am still being asked to pay 0.99USD.Can you please look into it.

[@hnasr]

Hi , you can go to your membership tab and find link to download all slides along side over 60+ member only videos

[@ebinantoneyt5978]

please do a video on NATS

[@FilthySnob]

Thats awesome thanks

[@KamalnathPolakam]

That's so haaarddd! That's what she said as well! ;-P

[@nicknick1411]

God, he has beautiful eyes!

[@ivandrofly]

Thanks

[@smithmarta]

*guys and gals!!! :)

[@youssefelshiaty5343]

22:25 😂😂😂

[@iamshadmirza]

Publisher is Gary vee 😂

[@hemanttoday]

Kindly improve content. Substance should be more and cut down other discussion.

[@80-two]

Horrendous. Thanks.

[@ibknl1986]

Kafka

[@pabastian]

first comment

[@PiggyQuacks]

First comment to first comment

[@omarkarim9298]

You need to be more to the point man, content is first class, but you drag on way to much.

[@zedzpan]

That's part of his attraction. His flare and passion enforces his videos. If you want plain, go find Jane.

[@80-two]

The whole thing was waffle, lacked any actual facts and the more i think about it - it was entirely useless.. I’m not sure if this was aimed at junior developers or something but anyone with at least 6 months dev on their CV needs to go elsewhere for a proper grown up answer

[@80-two]

Absolute waffle.. You couldnt even explain the difference between sync and async clearly.. I cant trust a word you say..

[@AgentZeroNine1]

Ugh. KZbinrs recycling their instagram content is the worst. Nothing like watch portrait videos on a laptop. Maybe I should turn my laptop sideways :-/