What are Elasticsearch shards? Why do they matter? Elasticsearch cluster architecture explained.

this is great content. thank you.

If elasticsearch distributes the data between the shards of an index such that each lucene store roughly holds the same number of documents, when you run a search query, elasticsearch, despite the inter-node communication, only knows which shards hold that index and not which particular shard will have that document? So it has to run the query against all the shards and merge results, it cannot just search the one shard that contains that document? It does not know beforehand based on how documents are distributed among shards.

This video changed my life. No exaggeration.

I think that shard in ES has the same concept with partition in Kafka when they have all partition replicas in different nodes

Very clear explanation!

What a clear , and progressively explained architecture. Thank you so much

Thank you. It feels like my brain is getting clearer.

Man! You are not from this planet! You deserve a thousand thumbs up.

Premium content, thank you!

I am not able to enroll for your course, tried with 2 different emails, please have a look into this.

This is a video that should go to a reference library about Elasticsearch. Thank you for putting such a good, clear and methodical overview of ES. Just brilliant!

Watched this 5 times, rewound several times and i understand it FULLY. Thanks so much for such clear explaining

Thank You for making this fantastic video !

Awesome explanation about Elasticsearch!!!

wonderful technical story.

thanks for the clear and awesome explanation to Elasticsearch and Lucene. really appreciate this useful content

Great content, thanks for sharing!

This is the best explanation of elasticsearch I've ever seen. So many videos skip over the details, and it's been making it difficult to understand what elasticsearch is doing under the hood. I normally don't comment on videos, but this is too high quality not to. Please continue to put out content!

Thanks - the perfect introduction to Elasticsearch architecture.

Absolutely fantastic!

Please post more videos…ur videos are easy to understand and quite informative….please carry on the good work

I really wish this was the 1st elasticsearch video that I had watched, so as to save me so much time watching other video which could not teach me the same level of information that I need. Thank you very much, and I shall check out your courses.

Is it fair to say you could build ES from dynamoDB? I'm trying to compare the two.

I would love a video on the query language, does it have a mathematical basis like sql does to sets?

It goes without saying, but I'm say it, thanks for making this clear, concise, focused high level content.

Wonderful. Thank you so much.

This is so good.

This is fantastic! Bricks till walls in a nutshell! Thanks much for this great presentation.

Hands down the best explanation and introduction to Elasticsearch. Can't thank enough for making this video.

Wonderful. Looking forward to more courses from you.

Thank you very much sir for this information. Awesome people like you are what's good about this world!!! Much appreciated!!!

Thanks so much for this great presentation.