How does Amazon Elasticache work ? Lazy Loading | Write Through | TTL | Simplified
Channel: Pythoholic
Date: 2020-03-23

Hello Everyone, and welcome back to another episode of AWS series, 

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I hope all of you are safe and healthy and its a very tough time for all of us and I can understand how frustrating it can be to stay inside and deal with the situation which is Coronavirus. So it's a request that please take good care of yourself stay at home stay safe.
Youtube is awesome and youtube is free, stay at home, enjoy relax and you can learn something new every day under isolation as well.

So finally after 50 days, we have completed a milestone in our journey in getting certified and I am very happy to share with you that I got my AWS solutions architect associate certification completed.
So if you want to know how I did it? and How you can as well? 
I will upload my experience video soon, so do watch out for that. 

I gave my exam on 15th March 2020, for SAA-C01, and I am sure you would want to watch it so please make u have subscribed to the channel. 

Amazon ElastiCache is an in-memory key-value store that sits between your application and the data store (database) that it accesses. 
Whenever your application requests data, it first makes the request to the ElastiCache cache. 
If the data exists in the cache and is current, ElastiCache returns the data to your application. 
If the data doesn't exist in the cache or has expired, your application requests the data from your data store or the database we have our RDS database. 
Your datastore then returns the data to your application. Your application next writes the data received from the store to the cache. 
This way, it can be more quickly retrieved the next time it's requested.

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Timelines for convenience:
01:25 -- What is AWS Elasticache?
05:19 -- Cache Hit vs Cache Miss?
08:24 -- AWS Elasticache User session datastore
13:56 -- What is Lazy Loading | Write Through | TTL

#Elasticache #AWSSolutionsArchitectAssociate2020 #Caching