What is Redis Cache?

In this first video in a three-part series, we'll explore what caching is, how it works, and how Redis can help! Stay tuned for future videos on how to implement a cache from a programmer's perspective and how to create a distributed, fault-tolerant, and persistent Redis cache!

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[samsmith]

Brilliant! Finally someone explained cache as a db instead of playing around with terms like layer or server or embedded crap. Thank you

[Teen-Conor]

This video explains Redis better than the stupid AWS course from my college.

[ttt]

THIS was just what I've been looking for.... ❤

[janettembraverman]

Great job!! Loved this explanation of caching.

[SK-rlwu]

How Redis maintains this cached data internally? does it maintains in some kind of tables or files?
If I want to store 10GB of some relational data tables data or query output, should we need approximately same out of RAM for REDIS setup?

Could you please provide the details how to understand the internals

[villanuevajoshua]

question - does cache hit and cache miss will automatically happen? or still need to refactor the application to query redis 1st before hitting sql?

[pratik]

Thanks for the video. That explains caching quiet well within short period.
I have a question (might sound lame as I am not pro with caching)
If without caching a transaction takes 75 ms, after introducing caching and for the first hit of any request when it is a cache miss and call is send to back-end, will there be exponential increase in the turn around time? will that add X ms for a cache miss ?

[abhishekghosh]

Hi Justin! Can't find what this exactly means in the o/p of redis-cli info. master5:name=NAME, status=ok, address=IPADDR:PORT, slaves=2, sentinels=3 . Why multiple masters and slaves only 2? Can you please direct me to a doc on this? Thanks.

[ude]

Would i need to change my program code (php) to accommodate Redis?

[kasirbarati]

where is the link to that redis caching strategies?

Just a suggestion: Add a link in the description to those video that you've talked about them in this video 😄

[zzco]

How about we not use pre-roll ads that are half-as-long as the video itself, thanks?

[efeonobrakpeya]

When I saw his beard I knew I could trust him

[gizmo]

When we say caching response is less than a millisecond, is it really true ? Because there is still network latency calling Redis, which will be external to the application, and that is in the order of 20-30 ms in AWS say.

[lunar-ixvu]

Thanks, but the desk props are puzzling: two stacked keyboards and a plant ~ really, who comes up with this?