Redis Hashes Explained

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Hashes are one of the most useful Redis data structures. In this explainer, we’ll introduce you to the most common Hash commands, including HSET, HGET, and HINCRBY. We’ll also show you how to use Redis Hashes to model a simple domain object for an imaginary online role-playing game!

Links:

  1. Redis
  2. redis
  3. learn redis
  4. redis developer
  5. redis tutorial for beginners
  6. redis database
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Комментарии
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And that, ladies and gentleman, is how you make an educational video! Bravo!

Redheadtama
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These videos are so amazingly produced, thank you so much. These deserve so much more attention. q.q

Naru
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This is explained incredibly well! Really, REALLY well. Thank you :)

effin-e
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Is it possible to set an expiration time for each field and not for the key?

leandrogonzalez
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Very nice! Much thanks for this video. amazing content!

עידובלייכר
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Хорошо объяснил. Спсибо. (explained well. Thanks.)

maximhlinsky
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Amazing explanation 🎉🎉🎉

Imagine you want to return field X from a list of players, how can you select them?

Player:1
Player:3
Player:5

How to get values for the players 3 and 5 in one go? To avoid round trips to the db?

Thank you

albertoneto
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you have specified gold of 20 and when running the command of HGETALL it print out 140, i suppose the video was made is different times

tom_
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What's the performance of the Redis Hashes? I want to store several properties in the Hash that I will be updating/removing on a regular basis (every 1 second). Is there any performance impact?

AleksandarT
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Thank you for the video!
I have questions... because HashSlots is 16, 384 so we can only do hset up to 16, 384? (* if no HDel executed)

miracletechteam
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Understood all. But how do people manage to cache query along with its results set. Specifically filter queries/search queries. In a typical scenario, people input some values/conditions in input field, based on that input, system goes to database, finds the records and sent it back to the user, displayed in grid. How this search params and conditions should be stored in redis?

rpiisenh
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The value of the gold is set to 20 during the player 42 init at 2:15. Why the value of the gold is 140 after running hgetall command at 2:23?

vtchkrcn
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Great video. Have you heard of a game called Dungeons and Dragons? It's very good. Will Mages and Minotaurs be playable from the Redis command line? :) I might have to check out RU.

RickHenderson
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Nice explanation!!

Its possible to filter a key with especific value?
All players in level 4 e.g.

Thanks!

fernandocristan
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Every time I was in an interview, the interviewer always asked me about how the Redis Hashes were implemented.
And I said, "I don't know. What I know is how to use them".

jimwichen
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Why use the word hash to name it? It is just like a JSON file.

grjesus
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Is redis field and value could be of List type on python3.9.16 ? Thanks

manjunathbukkapatnam
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I'm doing RU101 now, and in my humble opinion, it would be great if you can turn off the background music.

jacques
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Nice video.
I'm currently using Redis-OM with FastAPI, NO SUCH INDEX using the find method. I'm using the aredis_om module. Any idea why this is happening?

Thank you.

TheAremoh