Logback vs SLF4J vs Log4J2 - what is the difference? Java Brains Brain Bytes 

I came knowing nothing about logging libraries now I know you can have multiple libraries serving your project! Thanks man!

"what is the difference?": One of them had a major vulnerability that affected a big part of the internet to be at risk. But I'm not telling which one it is...

Always pleasure to watch JavaBrains vids☺️ need more of these Java bytes videos where u take up a single thing and explain in around 10 mins..

Your channel is all what every enterprise Java developer ever needs

Koushik, you are the best teacher. If anyone asks me where to learn Java or similar stuff from, I recommend you to them.

Watching this again after the Log4J2 incident. Logging hell gets a different meaning.

Supremely digested, thank you so much! I might add, as well as the other videos. You're making a great contribution to the developer society. Very informative and very ingestible.

Thanks a lot for making the Video! It cleared up a lot of stuff for me. Keep up the good work and the content on Spring Boot coming! 😊

How do you come up with so much clarity? The video seems to be short, but the effort you would have spent going through their docs and understanding, then coming up with just the information required in 10mins is tremendous. Respect.

You know what? I don't skip any ads on your channel. That is the simplest thing I could do to appreciate your work. Thank you Kaushik.

Thanks Kaushik sir. Your High quality contents are a boon for us. Please also make tutorials on design patterns, architecture and React JS

Good content ! One thing I'd like to add here is SLF4j vs log4j is that placeholder { } in SLF4j reduces lot of string concatenation in the code and also avoids creation of String Object, thereby reducing the memory requirements , and this could be handled by if (LOGGER.isDebugEnabled()) clause in log4j style.

Thank you so much for your content. I truly appreciate it and you've helped me so much at my job

anyone here because log4j cve?

The quality of the content is amazing. Thanks Kaushik.

I was expecting to be confused but you explained this very eloquently. ++subscriberCount;

Myself am a noob in java and I would cry for real if i am asked to work on logging.Thanks alot man.

Great Explanation..😊 love to watch all of your videos..😀

Great video! Thank you for this clean explanation.

Very good quality. Thank you!

Such an informational video, which is not even covered in paid courses.

Great video as always. Thanks

Please make ReactJS tutorial videos pleaaseee!!! you are one of the best youtuber teachers out there. Love your content!!

This channel is just amazing. For me the best source on Java programming on RU-vid. Thank you so much.

Logging really became a hell with log4J🥴

that was awesome! thank you.

wowww dude this cleared a hell lot of stuff.. thanks for this..

Hello Kaushik, kudos on the nice presentation. For your information, log4j predates JDK 1.4 and hence java.util.logging by 3 or 4 years. Thus, the beginning of the presentation where log4j is shown as an improvement upon java.util.logging is historically inaccurate.

One of the features I always look for is to change the log level on the fly without restarting the app server. In production, you can keep the log level at severe, but if there is an issue and if you need to turn it to finer level, you cannot do that without restarting the server. Most of the app servers, use simple JDK, but allows to change log level on the fly. So if you don't need the bells and whistles, stick with OOTB.

super super clear. 👍

Excellent tutorial. Thanks a lot

thank you, very informative :))

Thanks sir for explaining in detaills

Excellent !

Explained very well

I want to say something to you Kaushik, I am new to development (less than 1-year experience) currently working with an IT company here in Pakistan as a Java developer, but let me tell you When I get a job in Europe I will surely donate too much money to support your channel. Love for you Kaushik sir! 😄🥰

Man I love your Intro!!

awesome comparison.

very good job, thank you

Logback, SLF4J and Log4j2 are Java logging frameworks. Logback is an implementation with a facade API, SLF4J is a facade for various logging platforms, and Log4j2 provides both a facade API and an implementation. They all aim to provide a standardized API for logging in Java, allowing flexibility in how you choose to actually implement logging.

Thank you so much

beautiful thanks❤

Helpful

The best explanation ever... #KaushiksNo1Fan

Sir, Please make videos on Mockito and JBehave.

Good video, but I would challenge your assertion that logging is a mess. Keep up the good work

sir , please do not forget to include yourself in videos next time . like, in many videos we have seen you interacting with us . make it like that . and i am really thankful to you for you microservices session. also please consider covering these topics too : "client side load balancing with ribbon, feign rest client, zuul api loggin filter, distributed tracking with zipkin". i can find these topics covered in youtube but ,the way you explain the things , i understand better.

I like how the comment from the creator of these logging frameworks is sitting silent here in the comments section..

Hi Kaushik Can you make a video on functional programming relating to Java 8 and Scala

I should also add that both past experience and recent events suggest to me that no one should use log4j2. If you understand the recent security problems you'd have to conclude that the team involved didn't understand that it was a bad idea to (BY DEFAULT) scan log messages looking for special char sequences and then potentially download and execute remote code based on it. This suggests they don't understand basic security or performance concepts, but also that they don't know that most people won't want all kinds of random and obscure features thrown into their production system, where it would take a lengthy read of docs and/or code to even know what you're getting!

Found the answer after a long time

9:21 so many tubers forget that the cards don't always show up & don't put the link anywhere else either

Hi Kaushik, Can you do a video on vertx api development

Just one question, little bit off the topic related to design(i am learning these days). Why Facade, why not adapter ?

what the "hell" is this? I love it!

nice

I think fine is not that FINE the debugger level, but it means the granular logging, which means every single piece of information will be logged when logging level is fine. It contains more sensitive information's and we normally use it when debug or info level logs are not worth analysis.

The history part was basically wrong: Java util logging came AFTER log4j. Basically log4j was the first widely adopted logging framework in Java, and later Java borrowed the idea (hierarchical logger, log level, appender/handler) and make up its own logging framework (java.util.logging) The part for log4j2 was wrong too: right slf4j was developed as a facade. And logback was developed as a “native” implementation for slf4j almost at the same time slf4j was introduced (they are from the same guy anyway, which is the original author of log4j) Log4j2 is basically the same: it contains the API part (which is basically what slf4j) and implementation (just like logback). Which means you can use log4j2 API and use slf4j/logback as backend.

Can you do one on OpenJDK?

I'm from the future, in December 2021 Log4J will, oh god, I've said too much!

Hi java brains, I watched your so many tutorials series like spring boot, java and all are so helpful for me. Thanks bro for all those content. One request is that can u make spring boot java testing tutorials series like mockito all those stuff, That would be so helpful 🙂

1:30 java comes with logging class, java.util.logging Logger.getLogger(someClass) Has log levels: -info -severe -fine Handlers: how to handle logging requests. Console handler, file handler etc People didn’t like the default java logger, because developers are little bitches and so logging libraries were created. 3:30 Log4J, has a Logger class like the default logger and log levels: -info -debug -warn -error Instead of handlers, log4j has appeasers: - file appender - console appender - rolling file - jdbc - smtp - jms 4:50 to standardize the logging api we have Apache commons logging as well as slf4j. These are called facade libraries, they provide an interface but use other libraries to do the actual logging 6:15 log4j successors 6:30 why use sl4j? Done thanks

That thumbnail though hahahaha

King

hey kaushik, how did you make such fancy video? what's the tool that you use?

Sir make on spring JPA .hibernate and jpa are same?

What we need is to consolidate all the frameworks into one. The authors should get together and merge the best features of each into one. Same with the major frameworks.

Pls give a Byte about OAuth bro 🙂

I want to know other difference : log4j log4j-over-slf4j slf4j-log4j12

Sir, you did not add the video info in the end. 🙂

Hi Sir I have question here, Even if a .class file enters log what that can do, because it will be on log files, how can hackers can execute java from a log file. May be I'm silly but I got this doubt

SFL4J API or Log4J2 API ?

How to become good in coding?

Because Java...

I think every Java developer has the same confuse

0:30 "Do you have 90 minutes?"

Up vote for speaking truth! Logging Hell!

apparently choice is hell.

Log4j1 was before jul

I have programming for many years and don't know this, I feel like a loser.

rofl

Please use dark background in you presentation 😂

not much useful content