Jack, I think you should use "reference identity" instead of "referential integrity". The "referential integrity" is a term from a relational database theory and it is a guarantee that all references (foreign keys) point to existing entities and there are no "dangling" references/pointers in your database (or application state). For example, in a normalized Redux store it would mean that if a post object in a "posts" collection has a list of IDs of "comments" (a foreign key form "posts" to "comments"), then all comments referred by the post must be present in the "comments" collection in the store. In a normalized store posts do not keep direct references to comments, only IDs, so it becomes important to care about the referential integrity, as it does not happen naturally. The "reference identity" OTOH is just a special case of an equivalence relation, which guarantees equality of two referenced objects if and only if the references point to the same object ("shallow equality") but ignores structural equivalence ("deep equality"). React relies on the reference identity AKA "shallow equality" of two objects. It does not care about referential integrity, like lack of dangling references in your application state.

that transition at 0:45 is NICE.

These videos are gold Jack, it's hard to find such high quality and down to earth tutorials like these. Keep it up!

Great content Jack, thank you for taking the time to explaining React Memo so clearly.

Your explanation skills and demo demonstrations are so amazing! Great videos!

Great video, Jack! Thank you so much for your work! Keep it going.

Really great explanation. Your videos are getting better and better! Thanks a lot!

Thank you Jack ! I was looking forward to this. I am going to do few experiments for my own cases, but after that video, I feel better and less stressful about re-rendering I guess 😊

Amazing content as always , really can tell that this vids are professional because of how fluent you are with the syntax , the examples and the visuals of the video overall everything is very pleasing thank you

"React Memo" == "Render if the props have changed"

Thank you! I really enjoy your content. Always concise and insightful! Great editing btw :)

Recently discovered your channel and have found it extremely valuable! Liked and subscribed. You have a very clear way of explaining things that I have been struggling with for quite a while :D Thanks and hope your motivation stays high for creating more content!

Been looking at lots of videos and reading a lots of articles but couldn't get my head around when and on what these hooks must be used. And with this video everything is crystal clear. Was such a simple concept. Thanks Jack for this great video. Been following your a while for quality content.

These Mastering React Hooks series are really, but really helpful. I can't thank you enough for everything I'm learning from this. Keep it going!

This is really on a whole another class. Rich information yet so compact at a time. Thank you!!

This is something really important that almost anybody takes the time to explain. Thank you so much and keep on this kind of amazing vids!

I have seen dozens or even hundreds of youtube tutorials and this one is one of the best. Great content. I like most that the information is coherent, forming a whole. It is explained in detail. The pace and tone of Jack's voice are engaging. Fantastic job 👏👏👏

Thank you Jack! :) Every time I come to you channel I learn something new :)

Thank you for your amazing explanation! You made it so much clear to understand!

Your videos are always so clear, detailed and to the point. Every time I click on one of your videos and think I know about the subject, I always end up learning something new. Thank you for sharing your knowledge with us!

Great explanation Jack! Thank you for your content!!

Very helpful video. Straight to the point, examples and comparisons included. Definitely cleared up a lot of my questions about React memoization. Thank you 🙏🏻

Hey Jack, just wanted to drop a quick message to say thanks for the video! I've been following your content for quite a while now, and I gotta say, you're hands down the best I've come across. I've learned so much from you, not just about coding but also your logical and concise explanations. Thanks again, really appreciate it!

Thank you for this. I've been watching several videos from you, and they are all great. You go deep and into details, and throughout the way you teach a lot of small things that can help build the bigger picture. I'm interested to know about your career history, can you make a video about that? like when you started to program, what languages, frameworks, talk about the evolution of computer science from your aspect and so on... Cheers! (btw finally subscribed!)

Loved your explanation. I subscribed immediately!!

This is the best video I have seen on the topic. From giving the concepts to telling its pros cons with correct usage. All things are included in depth summarized in this 27 min tutorial. Hope you channel grows

Great Video. Thanks soo much. The whole react memo became very clear for me.

Thanks for the video! Comprehensive, straight forward and thorough. 🙏

The best and most thorough explanation I've ever seen! Fantastic!👍

Hi Jack, Extremely grateful for this insightful Mastering React series, a small correction at 18:30, I assume you meant to click on the Re-Render app button instead of the Change color button to demonstrate the memo failure with object type parameters.

Jack one of the best breakdowns I've seen on React Memo thank you very much!

Excellent breakdown, I think the part on renaming the function in your head is critical to understand this function for what it actually does. Really well edited video too, I'm looking forward to more from your channel!

Fantastic explanation! Personally, I was struggling and confused about using memorization in React, but this video definitely helped me to understand this topic. Thanks Jack ❤

I watched a lot of other docs and tutorials on those hooks and now finally I feel understand this properly, even if I used it many times already successfully now I get the fine details and differences and also when not to use them

Great stuff ! This topic was always confusing to me. Thanks !

The best tutorial on YT I've ever watched about the topic!

The way explianed memoization comparing to traditional memorization was just amazing. in fact you just thought me how memizationreally works under the hood in react. the part where you mentioned when to or not to use moemo in react was also great example to understand the need for memo. thank you very much🙂

Thanks for this, my useMemo and virtual dom concept wasnt much clear before I watched this. Thanks.

Thank you again! So clear explanation! That is the main difference between junior and senior-level developers - it`s when you can provide a clear explanation to your "team members".

The best and detailed explanation on memo. Thank you so much.

wow the content is getting so much better ! great video !

From the moment you casually typed “zoom” as a css property (which I didn’t realise was even a thing), I knew this was going to be a good’un. Thank you, Jack. Wonderfully clear explanations. 🙏😎

The explanation about VDOM and DOM was amazing, I didn't know any of how that worked in React and I bet a lot of people don't as well. Thank you for your videos!

Hey Jack! I really appreciate the deep dives. Thank you!

Goddamn! Mm-mm-mm! You took them tutorials on the next level with these transitions and the chapter titles! Probably the best React/Typescript youtube channel out there. Thank you so much for the hard work, can't wait to see you have 500k+ subs on your channel.

By farrrrrrrrrrrrrrrrrrrrrrrrrr the best tutorial on those topic out there. Greate explanation! 👏

One of the best channels out there! Thank you

This was purely informative, thank you so much.

Extremely good explanations, thank you!

Thank you, your explanation way is so amazing and I learned a lot and how you use examples is great.

This is GOLD ! Thank you.

Thanks mate, perfect explanation!

This was such a clear explaination!

awsome and comprehensive explanation thanks a lot

Thanks, what an incredible explanation ❤

Excellent video as always ❤️

Thanks! Really nice and informative video, and again thanks for taking my suggestion :)

Great content. You're a wonderful teacher. Keep up the good work, Sir.

I had about a week of building an app using some components I didnt understand that seemed to require useCallback. I kept getting stale state from it. Now I understand why! Thank you much!!!!

I love the way you jump to code instead of wasting time on talking like others. Keep it up!

Another great video! Thanks!

best explanation with example. Thankyou

Great great video!! U explained the useMemo so well !!!

Awesome, subscribed!

8:51 ""it compares the previous props with new props. And when those props have changed it re-renders. Thats all memorization is. "". Missed that in an interview :')

Thank you for the masterclass on these topics

Great content Jack, thank you!.

Hey, thank you for this awesome video! Really good explanation :)

Jack you are an amazing teacher! Thank you for this video!

Thank you, Jack. I learned a lot 😊

I watched several videos on this channel, and I see all new videos ; To my surprise, I wasn't a subscriber to the channel yet!! 🙆🏾‍♂️, Subed now 🤓

Great explanation! Was referring the official react doc but it wasn't as clear as this video!

Best explanation for memoization on UKposts.

Awesome, thanks jack!!

Superb, thank you!

Thanks, this was the best explanation I've ever heard.

Great stuff Jack!

best explanations ever I love your way for teaching.

very detailed and clear explanation 👍

Thank you, this is really impressive and clear.

Thank you clear explanation

Thanks Jack, for the awesome video

Clear explanation, now I get it, thank you.

Always great videos

best video on this subject thanks for helping me understand this better

you've got a new subscriber sr, you have the craft or art of teach good and clear

Thanks so much....this is a great video. I learnt alot 💯😍

thanks, great content

Found exactly what I've been looking for. Great explanation. Clear and easy to understand. Please do a series on advance react concepts

Probably the best explanation on this topic.

It was really great explanation, Thanks a lot.

Thanks so much!!

awesome refresher

Hey! Jack, Thanks for explaining the memoization. This explanation really cleared the concept and usage well. Can you also create a video on redux-thunk vs redux-saga. That would be real great. Thanks again

Jack's discussion of "Don't Sweat Re-Renders Too Much", was eye opening. Thanks for explaining it in reference to old jQuery methods!

i liked the video before even watching.. I know it will be a great one 💯

Thank you so much, Mr. Herrington. It is really informative and well explained.

Thanks Jack!

Great video, again!!!

Love it. Thank you