An Introduction to Elasticsearch (Building Elasticsearch application using .NET 5.0)

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Elasticsearch is open-source analytics and full-text search engine. It is built on top of Apache Lucene.
Apache Lucene is a Java-based library providing powerful indexing and search features.
In this video, I am going to cover the basic introduction of Elasticsearch and using .NET 5.0 application to access it.
Usecase for Elasticsearch is anywhere we want a search feature. RDBMS is not very good with search as their indexing capacity is limited and becomes very expensive very quickly.
Elasticsearch is usually used with Kibana for visualization, I will cover that in a future video.
00:05 - What is Elasticsearch
01:10 - Install Elasticsearch in Docker container
02:30 - Bulk insert data in Elasticsearch
04:10 - Create a new .NET 5.0 Application
06:25 - Adding Elasticsearch NuGet package
My block website is here: dotnetcorecentral.com/
My RU-vid channel is here: / dotnetcorecentral
The GitHub repo for this application is here: github.com/choudhurynirjhar/e...

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Опубликовано:

13 мар 2021

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Комментарии : 45

@ladrillorojo4996 2 года назад

Awesome tutorial. Super clear.

@peymanGhaderkurehpaz 3 года назад

thanks for the great tutorial, I would love to see a tutorial using elastic search in a more professional way. like inserting many items. suggestions, and also if possible searches with misspellings. and search paginations, searches with objects which have objects in themselves ( examples posts and their translations ). giving priorities to fields. I will appreciate it if you have time to make such a tutorial that could help so many people.

@DotNetCoreCentral 3 года назад

@peyman Ghkp, thanks for watching and providing your feedback. I will definitely look into it in one of my future videos.

@TurkeyNewsChannel 2 года назад

Very good tutorial, thank you.

@DotNetCoreCentral 2 года назад

@Turkey News Channel, thanks!

@ramb6500 10 месяцев назад

great tutorial easily understand elastic search with example Thanks for such free content

@DotNetCoreCentral 10 месяцев назад

You're very welcome!

@edvardpotapenko 3 года назад

Thank you ! Great tutorial

@DotNetCoreCentral 3 года назад

@Edvard Potapenko, thanks for watching!

@RobertStineIsTheBest 2 года назад

приємно що тут не одні індуси в коментарях xD

@sfms952 Год назад

Awesome video!

@DotNetCoreCentral Год назад

Thanks!

@daudulislam156 Год назад

it's very nice tutorial. thanks for awesome tutorial

@DotNetCoreCentral Год назад

Thanks for watching!

@omni3x 2 года назад

Awesom tutorial. I would love to see a sample where you upload bulk json file

@daviddonadze221 3 года назад

Whaaaat? This is was I was looking for

@DotNetCoreCentral 3 года назад

@David Donadze, thanks for watching!

@akashpateriya6146 2 года назад

Thanks for the great tutorial, When I am trying the code, i'm getting an error DisableDirectStreaming in debugger information and then in startup class i disabled the Direct Streaming. Now i'm getting healthy response in debugger information but values are not assigning in model class. All value are coming as null. Any advice or solution for this problem?

@Anubis10110 Год назад

Amazing

@DotNetCoreCentral Год назад

Thanks!

@arel3708 Год назад

great video

@DotNetCoreCentral Год назад

Thanks!

@devrub623 3 года назад

Thank u, it was very useful. What about if I have already a large database running and want to integrate elasticsearch as a solution ? Any advice?

@DotNetCoreCentral 3 года назад

@DevRub, to use elasticsearch the data needs to be in elastic search, you can ingest the entire database at the beginning, and after that either you can run a sync service between the database and elasticsearch, or use stream or anything for that matter to keep the data in sync.

@Latif127 3 года назад

Awesome, would you please make more videos on this topic, like crud in .net core 5 mvc.

@DotNetCoreCentral 3 года назад

@Abdul Latif, thanks for watching! Surely I will do in future videos.

@tech-helpbuddy2815 Год назад

what is the way to done this in data access layer (repository layer) instead of doing it in controller

@IvonianUg 2 года назад

Hi, how would you approach multiple indice search? Can it be done using one endpoint int the controller?

@DotNetCoreCentral 2 года назад

@Ivan Lumu, yes, from your controller class, you can get data from multiple indices and than join in-memory if needed

@90krishika 3 года назад

In the Get method I am getting error on the Documents return response?.Documents?.FirstOrDefault(); Task does not containt a definition of Documents. Any help? (I am using NET core 3.1)

@DotNetCoreCentral 3 года назад

@Nilanjan Chowdhury, are you using the code from my repo as is? If not can you share your code somewhere in GitHub gist so I can take a look?

@user-es1cf5zr1e 3 года назад

Thx from Russian with love :)

@DotNetCoreCentral 3 года назад

@Иванов Иыан, thanks for watching!

@eliassal1 3 года назад

Hi Dotcentral, the link to the repo is empty, I need to copy some text as I use VSC and not VS, thanks in advance

@DotNetCoreCentral 3 года назад

@Salam Elias, I pushed the code changes to the repo, you can check it out there.

@eliassal1 3 года назад

@@DotNetCoreCentral Thanks for your prompt response. Tell me what dos this question mark means here "respons?.Documents?.First", is it Elasticsearch specific syntax?

@DotNetCoreCentral 3 года назад

@@eliassal1 the question mark is equivalent to if != null, it checks for null, its a C# keyword.