Garbage collection in Java, with Animation and discussion of G1 GC

[@pratikbutala9044]

Watching this in 2024. Amazing information on GC fundamentals. Thank you! 👍👍

[@er.sahilmd]

Same here

[@vyshnavramesh9305]

Update:
80lpa in 2022 for 2/3+yoe
Original (2019-20):
I think for a 3 year experienced software engineer, video until 34:02 is more than enough for an interview.
1. Heap divisions and GC working
2. Types of GC and their commands
Present a story revolved on the below topics on the day of interview and ask for 35LPA Rs. Get competing offers and negotiate to 45LPA Rs / 300K USD / 85K Euro / 100K Pound / 150K SGD (these are the maxed out TC ranges, only RSU/4yr included, per geography I have collected from TeamBlind, levelsfyi, reddit and LC ).
Other important Java topics:
1. Oops
2. String, String Pool, Immutability, Builder, Buffer
3. Collections: When to use what, equals, hashcode, comparable, comparator, internal implementation of Arraylist and Hashmap
4. Generics: Why generics, type erasure, generic class and method
5. Thread: Race condition, synchronize/lock, threads block/Deadlock
Less important Java topics:
1. Exceptions
2. Serialization
3. Reflection
4. Unit test
5. Design patterns: Atleast singleton
Spring:
1. Why spring, spring boot
2. IOC and Dependency injection
3. AOP
4. Design and Implement an api: controller, service, repository, entity, model, mapper, validation, security, datasource config in yml, liquibase, unit test case
DBMS:
1. JOIN
2. Normalization
3. Index
4. View
Distributed systems:
1. Each component of Netflix OSS (or an alternate AWS resource)
2. Sql vs nosql
3. Monolith vs Microservices
4. Request response vs Event driven (Event notification, Event sourcing, CQRS)
5. 2pc, 3pc, SAGA
Algorithms: (Leetcode, CTCI)
Array: left scan, right scan, svan with storing computation, two pointer, sliding window
String: sliding window, int char string conversions, int[26], int[128], int[10]
LL, Stack, Queue, Monotic stack and queue, Deque: All classic Qs
Heap: classic Qs
Tree: classic Qs
Graph: classic Qs
DP: classic Qs
System Design:
Grokking and Primer

[@bhargavsdiary3367]

Thank you

[@MrNareshProMax]

super!! thanks

[@rakeshkumarsm9900]

could u also share the resume building tips Thanks

[@vyshnavramesh9305]

@@rakeshkumarsm9900 check "google sde resume" on internet. Or there is one in CTCI book. Main thing to note is mention the impact (quantifiable) of your contributions at work.

[@yisusysusfriends2967]

@@rakeshkumarsm9900 i want a job a $300k, but its imposible to get a job like that from latin america

[@shubhamrajput37]

Watched this in 2024, both this one as well as JVM Architecture video. I can say that I will be willing to pay for this quality of content. Please keep on uploading more informative videos

[@VLADICA94KG]

You're awesome! Actually, it's most detailed and cleanest explanation I've found so far on YT.
Thank you!

[@motarski]

This is probably one of the best videos on Internet explaining Java GC. I am so happy I found it. Thank you Ranjith for sharing.

[@hellorsanjeev11]

Honestly, I didn't realize at the beginning that it's going to be awesome at middle and toward the end. Great video. Thanks for sharing your knowledge.

[@MrDimakoles]

great tutor! you should do more videos

[@sanjayizardar2263]

Best video tutorial I have seen on Java Garbage Collector. Thumbs Up !!!. Thanks for such a nice session. Please let me know where I can get your other videos.

[@djwalker4308]

dude, you're an awesome teacher. The last video I tried to watch on this was impossible to follow. this is awesome.

[@norbertmao1373]

appreciate how you broke down the different types of GC algorithms. This is a must-watch for anyone looking to improve their understanding of memory management in Java.

[@mukulagrawal5595]

Great tutorial about GC! I must say one of the best starting from basics till advance nitty gritty of GC.

[@stevenonymous82]

Such a high quality introduction, thank you kindly!

[@MrDroy13]

This is exactly what I was looking for! Very well explained. Great job! :)

[@1-stopsolutions754]

Awesome....even a person having no programming background can easily understand by watching this video. Thanks a lot!

[@m07hcn62]

Outstanding ! Thank you, Sir.

[@29july1978]

Well prepared tutorial. Thanks for sharing knowledge.

[@gilbertro]

This is the best tutorial on GC that I have watched so far on UA-cam !

[@andylau229]

Excellent explanation of GC I’ve ever seen. Thank you so much!

[@sachdevasahil7]

Love your videos. Learn alot and new things keep up the good work thank you

[@saipaarupalli1419]

This is what I am waiting for long time. even lay man can understand. Thank you Ranjith.

[@cgaurav123]

This is only i saw in youtube very well explained and cover the topic in very nice way to understand , Thanks for sharing and look forward for more topics.

[@arunbhushan]

That was a wonderful explanation Ranjith. Though some of the information was something i knew earlier, you explained it much better with all other options available. I especially loved the explanation of GC Algos, I couldn't comprehend the differences between them completely even though i went through multiple sources, but your explanation was crisp and concise. The visualizations were rock solid too...thanks for video :)

[@bangalorehub1336]

Excellant explaination.. never ever before understood this concept so clearly. U must do lot of videos .

[@malathi123in]

Very nice explanation with clear animations !! Thanks for sharing this and appreciate all your efforts in creating the animations !! :)

[@kaichenghu3826]

8 minutes in and I already think it would worth my time to finish it.

[@yongzhiyang2253]

As a java developer too many years ,this video is very useful for me, Cool......

[@muskanshivhare6466]

Probably the best video on garbage collector

[@sarojkumarmoharana9327]

Wonderful explaination. Really enjoyed and cleared all the internal concepts in Garbage collection. Thank you very much for this informative video👍.

[@stockgurumahanwal2644]

Superb ...it's one of the best tutorials I have seen. Thanks a lot 🙏

[@petereder8500]

awesome video man, i really like your references to actual java code. makes it really clear to me. thanks for the video

[@sumitsinghdeode2138]

One of the best video on GC. I hope you make more such videos

[@satheeshurs]

I don't see any better detailing for GC than this in youtube, I can guarantee this:) Great Job!

[@diptoacharjee7538]

Well-explained, sir.
With graphical representation, you have made the concept crystal clear.

[@ioannisiordanidis3562]

Amazing videos! I am in the process of binge watching all of them. You should consider becoming a tutor in LinkedIn Learning. You have a terrific approach and really talented.

[@neonlight1203]

Agreed

[@getinspired7032]

100%

[@harrybiet]

Thank you so much. This is one of the very few tutorial that go in such detail of topic and explain it so well. Well done Ranjith.

[@shivaverma9895]

Thanks a lot for GC theory. This is much needed. Thanks again.

[@muralitreddy]

Excellent vedio.. thanks you Ranjith. we are looking for more videos on Java and advanced java from you. thank you for your extreme effort to make these videos

[@gaborgsomogyi]

Best JVM memory management video! Thanks!

[@TheFuriousGh0st]

The best video you can find on Garbage Collection. Really appreciate the efforts.

[@suryaprakashrao2484]

Very nice presentation on GC. This explains every corner of Garbage collection in java. Thanks Ranjith...

[@reyazbasha]

The way you are making it simple is really good . Thank you Ranjith :)

[@avinashkumarnalam]

awesome video... thanks a ton for the video Ranjith, I dint have any idea how GC works before but now I got to know so much about it... superb hats off to you man

[@DivijShrivastava]

What a comprehensive explanation on garbage collection. Thank you.

[@npl4295]

crisp and clean explanation of GC

[@tharindawicky]

Very comprehensive explanation of GC tuning. Thanks to share your knowledge with us.

[@chiragagrawal4528]

very well explained waiting for more videos thanks for sharing with us

[@osunaedgar]

Best video tutorial I have seen on Garbage Collector !

[@poojapatil3739]

Best tutorial on GC... please do more such videos

[@krishnamoorthy3753]

Very useful so much of informative video

[@jontan1893]

Great explanation! I understand Java GC so much more now.

[@NIKUNJ2578]

Very nice video. All fundamentals of gc explained simply and beautifully !
Thank you !

[@leowilliams6848]

Your knowledge and understanding is incredible. I would be interested as to the path you took to arrive at where you are as a Jedi programmer. If you know of any great books and material that would guide the rest of us in a similar path, I would happily follow. I have watched several of your videos and I don't think I've seen a better teacher online. I absolutely love your videos and will definitely keep watching master Yoda.

[@peterhalasi546]

This video OMG... Can we just have a moment of silence and appreciate we get all this for free? You sir are a true gem...

[@vvvenkatesh18]

Thanks Ranjith, you are true Java evangelist. Love you video anytime. Simple Crisp and Straight.

[@adityamishra7655]

one of the best java theoretical videos. Thanks for the explanation.

[@shivakumarabhujangappa3470]

Best I have seen on the GC. Very well explained!!!

[@manish5727]

Really appreciate the way you have explained all the touch point of GC.

[@Veter_420]

Thank you man! The best explanation of GC

[@livingfantasy1240]

Very informative video sir...thank you

[@farq1111]

One of the best video on GC, thanks Ranjith I am new to java and it helped me a lot.

[@sagardighe2698]

Very well organized and explained. It clears the basics of GC

[@vvishwakarma]

Very nice explanation, starts with simple illustration and reaches matured overview. Great!

[@sandeepverma991]

Incredible video on Java Garbage collection.

[@4yt158]

You're a good teacher! :)

[@dslayerdevil]

This is some kickass explanation. Please bring some more tutorials on different topics

[@varuntanmay21]

Animation is a must for this explanation, as provided in video. Thanks Ranjith for putting in all the hard-work :)

[@memine5711]

Quality video . Thanks for sharing this video

[@kamalghai92]

Excellent video. I never learnt about GCs. I really enjoyed this tutorial. This was really helpful. Thanks :)

[@NehaPatel-ii6nh]

Great explanation with succinct example. Thank you...Waiting for more tutorials from you.

[@greatvedas]

Rajith, this tutorial is very clear, to the point and well explained. Very useful.

[@ranjithramachandran5928]

Thanks

[@ananthasubramanian7355]

Thank you for enlightening on GC...!!! Great video..!!

[@srikanthtellakulla7583]

Thank you Ranjith, It gives a clear picture of Garbage Collector!!

[@vyshnavramesh9305]

Summary:
Steps in garbage collection: mark, sweep, compact
Division of heap into Young (Survivor spave from, Survivor space to) and Old generations
Minor garbage collector runs mark and sweep in young generation
Major garbage collector runs mark, sweep and compact across the heap
Types of GC: Serial (single thread - stops app during MSC), Concurrent (runs CS along with application) and Parallel (multithread - stops app during MSC)

[@hiteshsardana1]

Very impressive content. thanks for sharing... Keep up the good work

[@multiVitamin125g]

Finally a comprehensible GC tutorial! Thank you :-)

[@hyperborean72]

Thank you so much
Recently whenever I need to learn in depth some Java Core concept I always look through the videos at your channel first

[@DhineshM-l3k]

Watching this in 2024, Amazing video.

[@87sanchavan]

Thanks a lot for this tutorial.. You have explained GC in very well. You have sound knowledge of java concepts.

[@OrugantiVenuGopala]

Really Excellent tutorial. Very clear and extremely nice delivery. Very impressed. Ranjith, you should do more videos. You have great communication skills.

[@hiteshtailor7343]

Very nice explanation of how garbage collection work . Thanks :)

[@sdcookingpassion]

simply awesome !!! Thanks a ton for taking efforts in explaining the concepts.Waiting to hear more from you...

[@marcinkurek2950]

Amazing quality of content, thank you very much!

[@chilamakuruvishnu]

Best and clear explanation of garage collection

[@charan9294]

Thanks a lot which provides lot information. Keep on posting your videos . Thanks once again

[@shasankav8232]

Great information and very well explained. Thanks for sharing. Keep us updated with your knowledge.

[@DeepakKhopade]

Amazing tutorial and very well explained. I have never done Java coding but currently landed in a job with VMWare for VMWare Tanzu GemFire and needed to learn more about JVM, Heap, and GC. Thanks, Ranjith.

[@nitishprabhu1222]

Thank you for Best Explanation.
Understand GC concepts very clearly....

[@vishuatsastra]

Wowww, the way you have explained this topic, Simply amazing. I can say now i understand GC ;-)

[@shanthinuguru7538]

Fantastic tutorial. He will make you understand the entire GC concepts.

[@kaustubhpatkar2145]

great tutor! Excellent explanation of Garbage Collection in Java.

[@picktube34993]

Great video 👍....you even answered all the questions that were popping up in the viewer's mind. Please publish more tutorials.

[@chinmaykhare7246]

thanks for this informative video. Please produce more and more such contents

[@jagankumar6756]

thanks alot Ranjith for sharing knowledge..The way you present and slides are simply awesome..

[@vaishalikamble8254]

Excellent..very detailed info. Thanks for sharing!!!

[@santoshkumartootika565]

this guy is gem ..request you please post various videos on java internal Ranjith. Please share you knowledge 👏

[@vinodmahato2505]

thank you 🙏 very well explained sir

[@priyag5812]

excellent video, loved the animations!! looking forward for your GC analysis video...

[@manatoshpritam]

Hi Ranjith, please do create more videos, I am following your chaneel from quite a long time, but I havent seen any new videos upoaded recently. I really like the way you teaches and explains.

[@davidroonie1336]

I liked the way you gave reason for Eden space

[@adorableaws8367]

Expecting more videos....such an amazing explanation on GC....