What is Redis and What Does It Do?

[@AThingOrTwoU]

I started a LinkedIn course on Redis, just to see what is it about. After 20 minutes I started to search on KZbin for a summary of Redis and get the meaning of it in short time. This explanation is short, understandable, just great. Thanks!

[@pinxtr]

My man looks like he's putting tutorials straight from Antarctica

[@opossum4463]

He looks like the CEO of a certain fortune 500 company. And that can't be a bad thing.

[@opossum4463]

I mean, minus the nose ring.

[@codepractices7]

I think he looks pretty similar to Twitter's CEO Jack Dorsey...

[@kw19991]

This is why indexes were invented, to reduce retrieval time for a query.

[@h456-m1l]

Proudly, the 200th like

[@riskitall7421]

Awesome explanation Trevor. Breaking down problems into dummy understanding is an art.

[@ekanastone]

I thought u were Jack Dorsey at firsts lol

[@hangout7081]

😂 me too

[@musaopaluwa2580]

🤣🤣🤣🤣

[@mdbasaz]

Me too

[@akeinchina]

lol, me too.

[@user-td5gy2fh3p]

Lmfaooooooooo 😂😂😂

[@courageahorttor7666]

Awesome elaboration. He hit the nail straight to the point

[@Paul_Aderoju]

Thank you so much. Heard Vercel recently implemented a Key-Value system, and it’s a Redis-like data system. This video gave me a good overview of Redis.

[@PowerUsr1]

This is a really good video. I’m a network engineer playing with docker and I’ve seen this a few times. Always wondered what it is.

[@StrikerEureka85]

FINALLY! a clear explanation as to what it actually does. thank you for this.

[@kaushikdr]

I have to admit, I was initially distracted by your glorious beard! :D I have a few questions I hope you can clarify - 1) Why is querying Redis faster than directly querying a database - is it because there is less amount of data to search from? Also, at what point does the cache start removing data? Is the oldest data removed first or is it the data that is accessed least often? 2) If we are using a cache worker to update the Redis cache every time there is a change to the database, why is this any faster than just directly querying the database? It seems that in this case, the Redis cache contains the same amount of information as the database and that the database would be updated before the Redis cache anyways.

[@ThefamousMrcroissant]

Aha, so basically an in memory cache. Very well structured video; shows the problem and how Redis attempts to solve it, making it intuitive to grasp its purpose.

[@deedoodeedoo6382]

@Alek Wolf I'm a complete beginner at Redis, but this seems to be a general software problem. Since Redis is an in-memory app that strives to use cache, to decrease the wait time for common data queries, it is based on RAM usage. Since it is based on RAM usage, it's limited by the RAM provided with the machine. I don't think BigData ever was a viable target for usage of Redis. BigData can return huge responses to queries and it's not really feasible to hold it all in limited RAM, a few bigger reports and OOM is achieved. I suppose at that point a better approach would be putting in resources to speed up the access to BigData resources and optimizing queries.

[@adityamittal4357]

This isn't what redis is, this is just an explanation of how a cache works. Caching is just one use case for redis. This video will make beginners think that redis is a cache, which is false. Redis is an in-memory key-value store with pub-sub model with many use cases such as creating event streams in architecture beyond mere caching.

[@didorins4994]

Thanks for starting from User experience, so we can understand the use-case clearly.

[@RedisUniversity]

Couldn't have put it better, great work!

[@MrPx0727]

Very good in explaining Redis serving as a cache system; would be nice to expand to all important features of Redis ...

[@davidmunyiri6147]

That's a nice explanation Trevor, i like the way you explained bit by bit to understanding level

[@mohammadzulqarnain6288]

Simple and precise, it made me recall how my fried explained me about Redis and Guava caching but unfortunately i dont recall the difference btw them.

[@lil_soum]

You did such a great job explaining this, thank you.

[@osmangani4966]

simple and clear, to the point.......really like the way you explain.

[@jackcastro9583]

i agree with your thinking！🥤cheers🥤

[@bsummer]

Wish we all Had Guys like this before College. Redis, which stands for Remote Dictionary Server cements it

[@baolam4180]

awesome explanation and greatly clear english speaking. I can fully listen to you without looking at the sub. Well done!

[@Food.5inder]

Awesome dude... simple and crispy explanation. Keep it up appreciate.

[@Shubham__Saroj]

real quick and awesomely covered in less time.

[@kunalb2051]

Best video on Redis ❤️

[@Kirimoshi]

I like the way you explain things, please keep going 👍

[@RoshanakRahimi-d1p]

thank you, it was so helpful

[@kinax2]

What if the user has updated he is info, Would the user get an old data or new data?

[@ans42101]

Thank you for the explanation, you made it simple to understand.

[@abbasabdulsalambamidele8760]

Very well explained. Thanks

[@Acumen928]

Just what I needed.

[@mirishfaqhussain9302]

awesome explanation jack dorsey

[@vop0092]

Awesome explanation in easy way ❤

[@rupeshsingh3607]

Nice video Sir ,please carry on ,nice voice clarity and representation

[@gagang.r684]

Thank you. It cleared all my doubts😀

[@VishalSharma-k7b]

Clean and clear. Thank you very much!

[@aparnasaha9729]

excellent explanation

[@ann_uken]

Thank you for your great explanation! 💥

[@renyirish]

Excellent explanation, thanks a lot 🤗

[@torrvic1156]

Thank you so much! That was very informative! I learned the scenarios of how I can use Redis.

[@darrenklein6090]

Thanks, that was very helpful.

[@Joop5037]

Very good explanation.

[@rednejiv123]

Excellent video! Thanks a lot.

[@Banjer]

Excellent explanation!!!

[@koders9778]

This was very helpful. Thanks sir!

[@cbtnuggets]

We're so glad it's helpful for you! Thank you for learning with us.

[@BlueDolphinBlues]

Hi Trevor Sullivan

[@ShukyPersky]

Sounds interesting 1. What are the memory requirements in the case of a large-scale database to keep this solution effective? 2. How effective this solution for a system that generates random access to a large-scale database? in which case Redis cache would require a lot of memory to stay effective I think that these topics should be referred to by the video.

[@cbtnuggets]

Hi Shuky, thank you for your questions. It will really depend on the load and amount of data, but there are some profiles in AWS and Azure that will be for enterprise requirements up to 14TB of memory. docs.microsoft.com/en-us/azure/azure-cache-for-redis/cache-planning-faq#azure-cache-for-redis-performance This is a good break down of some performance recommendations. We hope this is helpful! Thank you for learning with us.

[@indrranil24]

awesome loved it!!!!

[@姚瑶-q8w]

very clear explanation. make us impressed a lot.

[@chriskaye1997]

Truly a great beard, so wow! much wisdom!

[@juejuepaing6985]

Thank you

[@adamdymurski9342]

Good for start. Thanks 😊

[@tylercode2207]

That was really helpful...Thank You!!

[@briarsmith8241]

Cache hit on the explanation

[@krishnashah6654]

Store data in a redis cache instance and retrieve that data from the RAM of the server that’s running the service. Initially the instance doesn’t have any data instead of it’s config data.

[@BassZeke]

Fantastic! concise. clear

[@IchEsseKonsolen]

Liking for the adorable outro. It HAS been informative for me!

[@canyoldas2855]

Very informative. Thank you.

[@rehamalbulushi520]

thank you for such a quick useful explanation

[@workpfeiffer3428]

good explanation. thakns a bunch

[@martinkarkovich3037]

excellent explanation!

[@DebbieGOfficial]

Well explained

[@Ibrahim-oc5ql]

very informative. thanks gistalot

[@none0n]

Thanks for the great explanation. So in order words, without a cache workers, redis won't be aware of new data and there is always the risk to fetching stale data?

[@rahimeinollahi1]

thanks for creating this video,

[@globalclutter9508]

Very informative.

[@mikkeljensen1603]

save your self the trouble and just use redis as a database, it is amazing

[@diet92]

Well understood 😎. Thanks

[@hackcodesfree9200]

super explained

[@shadymilkman10]

That was a great breakdown thanks!!!

[@niponchanda8356]

Greatly explained

[@stevendaddario8803]

Wonderful Video! Thank you for the clear explanation!

[@shantanu143]

awesome. simple and explained with diagrams !

[@xtianseyer018]

Thank you for this

[@edwardfraser688]

Great explanation thanks.

[@juneldomingo6277]

Great explanation! wonder what will happen to traffic if the redis goes down? will the web goes down as well as it cant retrieve data from cache? or will the web traffic will go directly to the database. Thanks

[@francoisbourdages2906]

thanks, very well explained and clear

[@williamfriedeman7078]

Wonderful tutorial, thank you.

[@ns4k_tv]

Thanks! Helped me alott!!

[@whatthefunction9140]

I used to hit the cache pretty hard in college.

[@zmark2274]

That easy, thank you

[@quirkyquester]

Great video!

[@rasnacv3802]

Thank you for this content. very helpful

[@mazdanaqvy3754]

Thanks

[@Ferruccio_Guicciardi]

Redis In-Memory database ! Redis Cache Service ! .... mmm... interesting.

[@alexandroskourtis5268]

greeeaaat video

[@brighteragyemang8765]

Thank you!

[@muhammedmusharaf386]

Thankyou

[@androidsavior]

where is the next video ? i cant find it

[@navid045]

Very good, great accent

[@jordanpedroinvestimentos]

Good video

[@fireystella]

Thank u!

[@sire_pandey]

thank you ,Sir

[@thiagocnunes]

Amazing content, tkss

[@sangtengkorak1954]

I see no one is make it, so I'll do. You know extension of redis name? Redis what? Redis nutz Great video all in all, thanks for the explanation.

[@shalinijaiswal5718]

insightful

[@salahalhashmi6528]

thanks

[@MatichekYoutube]

thanks, ..

[@ranjeetbadhe]

Can you please let us know how the Redis implementation in Openstack Controller works?

[@whatthefunction9140]

Hi Trev

[@LooneyTunesCarrot32]

So does this mean that the redis caching service will only be a hit if there has already been an existing query on the DB? Also, will the cache itself ever get too full, then what?

[@i3looi2]

So why not do the caching at server/api level ?

[@vishalk2798]

Well i had a query how long does the redis store a cache for is it for days or hours as if the cache does not clear then the redis cache size would get full right