Apache Kafka Crash Course

Apache Kafka is a distributed stream processing software developed by LinkedIn and written in Scala and Java.
Chapters
0:00 Intro
2:32 Kafka Broker
5:39 Kafka Producer
7:11 Kafka Consumer
8:34 Kafka Partitions
12:50 Queue vs Pub-Sub
16:47 Consumer Group
23:06 ZooKeeper
29:45 Coding Example
1:02:48 Kafka Pros-Cons
1:17:00 Summary
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In this video I want to focus on the basics of Kafka, talk about how it works give finally spin up a Kafka cluster and write a producer and a consumer.
Kafka Components
_ producer
_consumer
_topic
_partition
How Kafka works
Example ( Ride sharing )
Spin Kafka cluster
Write a producer
Write a consumer
Kafka Applications
Pros and Cons
Source Code
github.com/hnasr/javascript_p...
Docker commands spin up kafka
//if you ever mess up or you want to start fresh just stop and remove the containers and rerun the command
docker stop zookeeper kafka
docker rm zookeeper kafka
docker run --name zookeeper -p 2181:2181 -d zookeeper
docker run -p 9092:9092 --name kafka -e KAFKA_ZOOKEEPER_CONNECT=husseinmac:2181 -e KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://husseinmac:9092 -e KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR=1 -d confluentinc/cp-kafka
Get my fundamentals of database engineering course link redirects to udemy with coupon applied (database.husseinnasser.com)
Resources
KIP 500 (Remove Zookeeper)
cwiki.apache.org/confluence/d...
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/ @hnasr
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Stay Awesome,
Hussein

[@hnasr]

Check out my fundamentals of Database Engineering udemy course with over 20 hours of deep database systems lectures. Head to database.husseinnasser.com for a discount coupon. Link redirects to udemy with coupon applied.

[@markyoshikawa4278]

I love it and the way it’s presented! Will announce on LinkedIn when I get my cert. Thanjs for putting this together!

[@_sr]

27:28 answer: Every broker on a Kafka cluster is also named a Bootstrap Server. All brokers have the metadata required for the clients (producer or consumer) to discover brokers. When a client connects to one of the brokers (which are already configured as bootstrap servers in the Kafka configuration) it makes a "metadata request". The response includes information about topics, partitions, leader brokers, etc. Once the client gets this info, then - in the case of a producer- it makes the write request directly to the leader broker for that specific partition.

[@hakimbencella4242]

Thanks for the explanation

[@matejlaskomulej]

This should be pinned. Thank you!

[@HarshJain-lk8cw]

if all the brokers maintain this metadata then what's the role of zookeeper.

[@boobalangnanasekaran3381]

@@HarshJain-lk8cw The use of zookeeper is that only one leader is there for a partition at any given time by using some kind of lock registry.

[@syedsabeehahmedfatmi1099]

This should be pinned. Thanks!

[@jithin_zac]

I always got demotivated by the complexity I experienced when I tried to learn this on my own but this one is a gem. I know it might have taken a lot of learning and experience for you to explains this in a simple manner Nevertheless thank you for sharing your knowledge!

[@hnasr]

Thank you Jithin! And Remember to ask in the community to get access to the slides if you would like to since you are a member❤️

[@mubashirimtiaz3836]

I just wanted to express my heartfelt appreciation for the amazing Kafka crash course, Your dedication to simplifying complex topics shines through, and I can't thank you enough for making Kafka so much easier to understand.

[@stmasanti]

One of the best tutorials i’ve seen. Great class and very funny. Subscribed and waiting for more content!

[@aatifbangash]

Another perfect tutorial. Everything is explained very nicely. Thanks for making Kafka easy to understand in this tutorial.

[@hnasr]

Atif Ali thanks Atif for your support! Happy I could make such complex topic easy to absorb.. still I didnt cover all what kafka has to offer! Cheers

[@mikejeffery8371]

This was an awesome tutorial. You're incredibly good at explaining things and keeping people engaged when consuming so much information.

[@frontend-ops]

Just started watching and already loving it. I wish you a happy new year and hoping to see more great content like this.

[@MOHDSALMAN-sj2zu]

I made it to the end. :P Thank you so much for the amazing content Hussein.

[@asht7290]

Dude, I made it to the End. You kept us engaged throughout. I have soo much to learn about Comp Sci!

[@eduardotp541]

Not only the content, but the way you say it, and your enthusiasm, is something else. You sir deserve all the best, because you are, with no doubt, in the better's shelf..

[@satalkar]

I rarely comment on videos but this was genuinely one of the best computer science tutorials I've ever seen!

[@hnasr]

Thank you Anish for taking the time to write this appreciate you!

[@manishbolbanda9872]

i had to deal with Kafka in one of my project, so searched for some tutorials, As soon as I saw that you have made a video on this, i had a sense of relief that i dont have to worry about the resource atleast. Thanks for all your efforts man.

[@ershad003]

Sweeeeet... did not feel like a tutorial, but like a friendly chat between deeply connected friends, every word makes clear sense. Kept me engaged every second till the end, yes I made to the end. Well done Sire... 👏👏👏

[@myviewsmyreviews2001]

Amazing tutorial! Really find the topic interesting and easy to understand broker, producer, consumer etc.. Thanks for coming up with a great video. Hope we will get to see more on this.

[@psuter80]

thank you, this video was a great intro to understand what kafka is and how it works for a complete noob :) here is a docker-compose.yml that starts your two ontainers in case anybody wants to use that to go through your examples. basically i just took your two lines and converted them to compose. version: '3' services: zookeeper: image: zookeeper restart: always ports: - "2181:2181" kafka: image: confluentinc/cp-kafka restart: always ports: - "9092:9092" environment: KAFKA_ZOOKEEPER_CONNECT: 'zookeeper:2181' KAFKA_ADVERTISED_LISTENERS: 'PLAINTEXT://localhost:9092' KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: '1' another addon: create a copy of consumer.js and edit the group name.. start that in parallel with the two consumer.js processes which then demonstrates pub sub behavior. i write all this one and a half hour after not even knowing what the difference between a queue and pub sub is and what kafka and zookeeper are :) .. this just shows how good this tutorial was :)

[@ilyakushlianski6519]

Amazing, Hussein! Thanks for the overview of Kafka. I've always been a bit afraid of this beast, but now I understand at least the basics

[@bokilsbk23]

Great tutorial as always. Literally a crash course fit into about an hour. Has everything to get started with kafka, especially because of the hands on.

[@jasonngan5747]

The explanation and illustration is clear and concise! Thanks for the comprehensive tutorial!

[@luqmansen]

I just watched your RabbitMQ crash course and at the end of the video you mention how Kafka better at some point, then I bumped into this great video. Very clear explanation, love your video!

[@hnasr]

Luqman S thanks Luqman! Each software its use cases, I think RabbitMQ Is trying to be more than it really is (a message queue) where as kafka was designed to be a pub/sub and a message queue. If your app needs a queue and a pub/sub (or maybe streaming) than Kafka . If you just need a queue RabbitMQ is the way to go and kafka will be an overkill I think.. I would even consider zeromq as a lightweight mq.. Good luck!

[@nimasoufiloo2626]

Couldn't learn kafka better in such a short time. Thanks Hussein.

[@93kazem]

Thank you for this, don't know how I missed it

[@beatagryczka7108]

Amazing video! You have the talent to explain the complicated stuff really clearly😊

[@sy5294]

Your skillset is brilliant, amazing and fantastic. Thank you so much!

[@vbrtrmn]

Great video, thanks for making it. Love your accent! You're very easy to understand, follow, and your excitement is fantastic!

[@hnasr]

vbrtrmn glad to know thank you! Lots of people have trouble with my accent glad you like it!

[@zmm1337]

how do you only have 23k subs?? you're so good at explaining difficult concepts, tysm!

[@ballonura]

61k

[@gtiradob]

@@ballonura 79k

[@mazharuddin3647]

86.6K

[@johncerpa3782]

@@mazharuddin3647 88.3k

[@ManuelMartinez-dj2gr]

@@johncerpa3782 88.4k

[@yuanqingzhang3648]

This course is great because of the example. It's much better than some videos in which only some introductions are represented.

[@nihinlola]

Excellent practical explanation of Kafka, I wish every technical tutorial was as easy as this. Thumbs up!

[@a.yashwanth]

You explain by answering all the questions people get when learning a topic. Most tutorials just explain concepts.

[@rubensingh6809]

bro your tone when explaining these videos are so good. Didn't even feel like someone was teacahing me. It was as if a friend was talking to me lol. Good job man. Your excitement is intoxicating. :)

[@user-lq7yg5ej1u]

This is well detailed even for a beginner, I completely understand whats going on. Brilliant content.

[@atexnik]

This is the BEST educational channel!!! Bravo!

[@abhasupadhayay6420]

Really amazing!!! So many concepts explained in an easy and interesting way. Please keep up the great work.

[@ComisarioLobo]

Man, you are the best, thanks a lot for creating such valuable content for free

[@linwang7476]

Very nice tutorial. Got a clear understanding of Kafka, especially the part of queue, pub sub, very helpful! Thank you so much!

[@emanuel0723]

Enjoyed following this... as always, thanks Hussein!

[@priyaranjankumarverma2341]

I really appreciate you from my deep of heart for explaining such complex concepts in super simple way, Excellent :)

[@satheeshprabhakaran5330]

Made it to the end!! Amazing content!

[@alexsiuwh]

this is the only tutorial i found that go in the depth and details of a pro should know , and i can compare Kafka with other messaging system like JMS and MQ. Thanks so much for sharing👍👏🙏

[@mutasworld]

I made it to the End! Thank you for that video, I can now say I understand Kafka a lot better than 1 hour ago :)

[@rogergarza5378]

You are a hero, Hussein. I spent two afternoons with you on this tutorial and it was an absolute pleasure. Thank you!

[@hnasr]

Glad you enjoyed it ❤️

[@umair.ramzan]

made it to the end :))) Thank you Hussein, you are the best!!

[@prakharvijay8853]

Made it to the end, now gonna implement the backend of a texting app using Kafka

[@mikaeledebro1144]

Great explanation and overview over the possibilities of Kafka! Looks like a cool technology!

[@shubhamchandra336]

Really enjoyed this informative session and yeah, made it to the end !!!

[@johnshaheen3862]

professionalism + enthusiasm + enjoyment + wonderful content= Hessein Nasser

[@hnasr]

John Shaheen you make me blush John 😊 thanks !!

[@manishtanwar4803]

made it to end. Amazing video. you made Kafka look so simple, and the best part-> you showed a code demo. clap. clap.

[@nidalshater4027]

Watched this video in one session, also applied the practice on my machine, what a great content you are creating Hussien, a must rewatch as always 😉

[@alishoman2826]

the simplest and best tutorial ever!! Good Job

[@t529615]

By far the best introduction video to Kafka I have seen. Great examples and nice build up to demos that puts theory into practice.

[@hnasr]

Hans-Jacob Melby thanks Hans!

[@t529615]

@@hnasr One question though.. Shouldn`t the consumer allways get all messages in the topic (within its partition)? I can see that the property "fromBeginning" i set to true, but when i restart the consumer, it still waits for new mesages. It does not replay the old ones?

[@stefanmiller5818]

You really know how to do tutorials, great video!

[@amizan8653]

This is explained simply and perfectly. Thank you for posting this.

[@mzaman8660]

This is brilliant and concise. Been looking for a channel like this 👍🏾

[@hnasr]

M Zaman enjoy the content 🙏

[@shantnukumar1642]

Made it to the end! Awesome video Hussein :)

[@amirhosseinmoayedi6205]

truly amazing-so simple and incredibly useful. Great job!

[@abrahammoyo2939]

Hussein, You are a legend!!! Any one can be a master if they follow to your conversations. I like the way yo have a full conversation with yourself - such a good dialogue asking and answering yourself

[@hnasr]

Thank you! I am happy you noticed the conversation style, i have been working on it 😊

[@gokulkpeethu6642]

The best stuff on kafka . Made it so simple

[@peternamagonya5310]

I made it to the end. Followed every step and it worked nicely. Thank you for the effort... really helpful

[@atharwaadawdakar4144]

Thank you so much for such a crystal clear and crisp explanation !!

[@hvuupadhyay5418]

Made it to the end! Yay! Nice video Hussein!

[@hey.............]

Thank you man! Really appreciate the hardwork.

[@shivangitomar5557]

This is THE BEST video on this topic. Thanks a lot!

[@hirenjoshi2198]

Amazing explanation Hussein. Every single bit of your lecture is fully understandable. You made difficult thing easy with practical example. You rocked! Good Luck.

[@sindhumohana6164]

Amazing video Hussein ! The way you explain helps to register the information in our memory :-)

[@simonhuang1357]

I made it to the end. Thanks for the tutorial, it was very informative and I appreciate your efforts.

[@flippolis71]

This is a great video to understand what Kafka is and how it works, very well explained!

[@ibknl1986]

I made it to the end. Excellent. I don’t remember which video previously I saw was so long MD not boring at all. In fact you made it so interesting. May Allah (God) guide and bless you.

[@wanitooo]

Amazing video. A gifted teacher like this is quite rare ♥Thanks a lot!! btw made it to the end 😆

[@robbenbahati]

made it to the end, and every detail was fully explained thanks.

[@bhaveshgujarathi926]

made it to the end 🤟. It was a very good explanation with great clarity. Really Appreciate your work! Thanks a lot 🙏

[@AhmedElfakharany]

I made it to the end! Thank you for such great content.

[@hnasr]

Awesome! Thank you!

[@diptikaushik8250]

I made it to the end. :P Fabulous content! You rock. :D :D

[@DavidBwire]

Thank you for putting in the effort to make a short and clear to understand video.

[@susmitvengurlekar]

Made it till the end ! You can explain something in a super simple manner if and only if you understand it And you do, Thanks !

[@princeabdul4290]

Brother you're videos are phenomenal they are just top notch.

[@pavanr92iitm]

Made it to end. Thanks you so much for the quality content.:)

[@thecloudterminal]

This is amazing! Thank you for creating this

[@sergakrem]

Cool and neat into 👍 Thank you!

[@jassinakhlaqi5474]

Thank you for this amazing channel. I enjoy watching your videos and learning more.

[@Goodwin454]

I was looking for your channel , you really good at explaining things you helped me once , I'm here again , thank you andn jazkAlllah khayran .

[@neru4557]

Just watched it straight 1 hours 18 minutes during night without skipping.

[@hnasr]

Hero! I apologies for the light background on my slides that must have hurt the eyes :( I switched to dark mode on my future videos..

[@jiun683]

Thanks for such an awesome video on Kafka!

[@talkohavy]

I didn't know you before this video, but after this video? I'm gonna watch everything you upload man. Every tutorial you're selling? I'm buying! Obviously I liked & subscribed.

[@saurabhdeshpande8450]

Best explanation of Kafka on the internet!

[@pongching8697]

Clear and easy to understand. Although it's a long video, but not boring at all.

[@PrashantKhanolkarUSA]

Amazing video, you have made a complex topic extremely simple with your style of teaching.

[@atom_rr]

You're killing me man "LISTENERRRS" 🤣 ! Great video by the way.

[@PramodKumar-hu7mt]

It's good that you included jordan speech...i was just googled that video and came back

[@xonmaina]

Thanks Nasser I ve made it to the end. wonderful stuff

[@ibrahimibrahim1991]

Thank you Hussein, it's a great introduction to Kafka

[@unboxingsparkles5786]

I made it to the end. Love the long videos and the content 👌👌👌

[@hnasr]

sidra tariq thanks Sidra I like long format too 😊🙏

[@mosespeter9711]

I made it to the End!!! Thanks so much Hussein!

[@TheBechesa]

I made it to the end. Thank you for this tutorial.

[@hnasr]

Brian Echesa good work Brian! I know its a heavy topic to focus on for over an hour. Hope it was useful lecture and let me know if you have any questions 😊

[@jongxina3595]

best video on kafka. Thanks a ton!

[@adewaleShotobi]

Made it to the end 😁. Thank you!

[@obiwanus]

Huge props for trying to understand things before you teach them!

[@pavankumardittakavi5325]

So much quality content. Thanks a lot Hussein.

[@crypto-saiyan9283]

Today i understood, its not the subject its the way of teaching...thanks for sharing this wonderful knowledge

[@santiagobustamante970]

Thank you Hussein!! Great explanation as always!

[@DragonKlavier]

Thank you so much! That is excellent!!

[@hnasr]

You're very welcome! thanks!