EDUCBA

EDUCBA

MENUMENU
  • Free Tutorials
  • Free Courses
  • Certification Courses
  • 600+ Courses All in One Bundle
  • Login
Home Software Development Software Development Tutorials Redis Tutorial Redis Get All Keys
Secondary Sidebar
Redis Tutorial
  • Redis
    • Redis Pubsub
    • Redis GUI
    • Redis Database
    • Redis Get All Keys
    • Redis TTL
    • Redis EXPIRE
    • Redis Version
    • Redis EXPIRE
    • Redis List
    • Redis CLI Commands
    • Redis HSET
    • Redis FLUSHDB
    • Redis Key
    • Redis Persistence
    • Redis FLUSHALL
    • Redis pipeline
    • Redis SADD
    • Redis ZADD
    • Redis ZSET
    • Redis Get
    • Redis Replication
    • Redis Delete All Keys
    • Redis Use Cases
    • Redis HMSET
    • Redis Transactions
    • Redis Monitor
    • Redis HGET
    • Redis SETEX
    • Redis Rails
    • RedisJSON
    • Redis Get Key
    • Redis Auth
    • Redis gem
    • Redis Key Count
    • RedisTimeSeries
    • Redis Timeout
    • Redis LPUSH
    • Redis Architecture
    • Redis API
    • Redis Message Queue
    • Redis RPUSH
    • Redis Protocol
    • Redis Data Types
    • Redis Namespace
    • Redis ZRANGE
    • Redis Master Slave
    • Redis Memory Usage
    • Redis WATCH
    • Redis URL
    • Redis Key Value
    • Redis INCR
    • Redis EXISTS
    • Redis INFO
    • Redis HMGET
    • Redis Operator
    • Redis NOAUTH Authentication Required
    • Redis LRANGE
    • Redis RDB
    • Redis TLS
    • Redis HDEL
    • Redis WebSocket
    • Redis HGETALL
    • Redis GETSET
    • Node-RED WebSocket

Redis Get All Keys

Redis Get All Keys

Introduction to Redis Get All Keys

Redis get all keys is the redis key store command and it will be followed with a specific set of patterns to search the keys that can be matched with an exact pattern also using the * operator to store the data with all the formats it should be returned. We can also set the keys limit along with keys returned pattern redis-cli keys character like alphabets.

Key Takeaways

  • By using the Keys command to follow up the datas with a specific pattern.
  • We can get all the keys using the * operator command.
  • The collection concept helps to store and retrieve the datas from the Redis database.
  • Set and Get command is the main role of the store and retrieve the keys.
  • Datas are stored as key-value pairs for all the sets of collections.

Overview of Redis Get All Keys

Non-relational database engines help to handle the Redis data structures associated with the traditional databases on the quarantined set of tables. Each table has its own rows and columns to configure the system behaviors mapped to key and value pairs. Collections can be taken in more sets of areas to store and retrieve the table record that exists on the database by using the commands like Get and Set on redis-cli command line interface for performing the data information. Using the namespaces for datas that can be validated for overwriting operations on existing datas by using the operators like data separator operators, etc. Mainly there are two different commands for getting all keys like scan and keys to command preferably for clients to load all the keys.

Start Your Free Software Development Course

Web development, programming languages, Software testing & others

How to Use Redis Get All Keys?

Redis will search the keys for all matched keys along with the specified patterns. The keys prefix: * command to get all keys with help of prefix values. We also need to scan the data using the scan command and its operator is already mapped to the key-value pairs databases and also datas are iterated over the keys. Additionally, we can use the collection methods like Sets and hashes.

Steps to Get All the Keys in Redis

Given below are the steps mentioned:

1. Open the Ubuntu Terminal.

2. Start the Redis server by using the command like redis-server.

3. Then use the redis-cli command to connect the command line interface on Redis.

4. Next, we can perform the operations like here we can set the keys by using the below command.

5. Set key values.

Redis Get All Keys - key values

6. Here we can add the keys like months.

7. Set months “January”.

8. Then by using the get method we can retrieve the keys.

retrieve the keys

9. We can also retrieve n number of keys like below.

10. Keys * command

Redis Get All Keys - get method

Here the highlighted months are one of the keys which we have created just before.

Redis Get All Keys – Iterating

We could use the command like Keys prefix:* command for getting all the keys in prefix format but it’s always rather than data format. Instead of that, we can iterate the datas by using the SCAN command also for scanning the datas which is already created on the Redis database. Redis keys are the main part and they deal with the datas while keeping the same format as strings, integers, characters, etc. For a simple set of input strings, we can use the command like keys \* and we can get the result like:

Iterating

And if we can search the specific alpha character keys with the help of characters like a or etc. keys s* it shows the following result.

characters like a or etc

To list all the Redis keys with data store for the * operator to match the keys with List and Set collections.

Scan:

It helps to implement the java technology for scanning the datas with core functionality and offered by the jedis class. And it will help to find the strategies for different collections along with data types that require more than 1 additional parameter to search the data patterns, result in size, and scan the parameter like Scan Params.

All List of Redis Get Keys (Naive Approach Using redis-cli)

We know that Redis data store by using the Keys command on the redis-cli interface. Redis instance will be created, and it is available at the default ip address and port like 127.0.0.1:6379.

Redis Get All Keys - default ip address

It has the following types and its usages:

  • Linked List
  • Set
  • Hash
  • Sorted Set
  • Strings

1. Linked List

  • The Redis linked list helps to create the keys and push them to the database by using the command called rpush.
  • It helps to insert the list of datas on the output with length.
  • It has millions of data records to perform the operation.
  • The new element is added to the head or tail in the list.

Example:

Redis Get All Keys - new element

llen company helps to find the length and lrange company 0 1 for finding the range of the keys.

Redis Get All Keys - range of the keys

2. Set

  • Set also helps to store the datas using Redis set for exploring the datas.
  • Redis set command helps to populate the datas and its values inserted into the keys.
  • It accepts the string value of the key.
  • It also unordered data collections for unique sets of characters.
  • Command like sadd companys “CTS” “TCS” “Wipro” “Vera”

Redis Get All Keys - command

If we add duplicate values, it does not add them.

Redis Get All Keys - duplicate values

We can retrieve the datas by using the command, smembers companys.

Redis Get All Keys - data

3. Hash

  • Redis hash data structure to store the dataset in the hash key command and here it’s used as the companys as keys.
  • The data type accepts and maps between the string type of field and values.
  • It has stored from key to value.
  • If suppose the key does not exist, then it holds the hash value for creating a new key.
  • The hmset command is used to perform this operation.

Example:

Code:

hmset companyss vera 1 tcs 2 infosys 3

Output:

Redis Get All Keys - infosys

We can retrieve the hash datas using the command hgetall companyss.

hash datas

4. Sorted Set

  • It is also stored as a unique set of datas as members and values on sorted sets.
  • We can also keep the same data sets as the keys and values.
  • It is a collection set of a unique string values.
  • If more than one string value, it accepts and followed with lexicographically ordered datas.
  • It is like set collection, mainly it does not accept repeating sets of string values.

Example:

Code:

Zadd comp 1 veera 2 kripya 3 centric

Output:

length command

Same as list here zcard is the length command and zrange is range command.

Code:

Zcard comp

Output:

Zcard comp

Code:

Zrange comp 0 1

Output:

Zrange comp 0 1

5. Strings

  • In redis the datas are stored as key-value pairs and it’s referred to as the Strings type with collection items.
  • We can use mset command to store the key values with string type.
  • It stores the data as a sequence set of bytes that can be included text, serialized objects, etc.
  • It manages the string value type in the redis database.
  • We can also map the string value from one key to another key.

Example:

Code:

Mset new:September 1 new:October 2 new:November 3 new:December 4

Output:

Redis Get All Keys 17

Keys new* helps to retrieve the datas on the String type.

Keys New

FAQ

Given below are the FAQs mentioned:

Q1. Define Redis-key.

Answer: It is one of the keywords and it helps to fetch the data with specific patterns and types.

Q2. List the types of Redis-key?

Answer: Given below are the types of redis keys:

  • Get
  • Set
  • Keys
  • Mset
  • Linked List
  • Hash
  • Sorted Set
  • Strings

Q3. How will we count the keys in Redis?

Answer: DBSize is the command for counting the number of keys in Redis.

counting the number

Conclusion

The Redis data stores list the datas by using the keys and key-value pairs. We can use the namespace for how to store and retrieve the redis keys along with prerequisites for explaining the datas with colon operator command using the separator like (:) colon followed with a numeric set of keys and operations performed on the same namespace.

Recommended Articles

This is a guide to Redis Get All Keys. Here we discuss the introduction, and how to use redis get all keys? steps and all lists of redis get keys. You may also have a look at the following articles to learn more –

  1. Redis GUI
  2. Redis Database
  3. Redis Pubsub
  4. Redis Version
Primary Sidebar
Footer
About Us
  • Blog
  • Who is EDUCBA?
  • Sign Up
  • Live Classes
  • Corporate Training
  • Certificate from Top Institutions
  • Contact Us
  • Verifiable Certificate
  • Reviews
  • Terms and Conditions
  • Privacy Policy
  •  
Apps
  • iPhone & iPad
  • Android
Resources
  • Free Courses
  • Java Tutorials
  • Python Tutorials
  • All Tutorials
Certification Courses
  • All Courses
  • Software Development Course - All in One Bundle
  • Become a Python Developer
  • Java Course
  • Become a Selenium Automation Tester
  • Become an IoT Developer
  • ASP.NET Course
  • VB.NET Course
  • PHP Course

ISO 10004:2018 & ISO 9001:2015 Certified

© 2023 - EDUCBA. ALL RIGHTS RESERVED. THE CERTIFICATION NAMES ARE THE TRADEMARKS OF THEIR RESPECTIVE OWNERS.

EDUCBA

*Please provide your correct email id. Login details for this Free course will be emailed to you

Let’s Get Started

By signing up, you agree to our Terms of Use and Privacy Policy.

EDUCBA

*Please provide your correct email id. Login details for this Free course will be emailed to you
EDUCBA

*Please provide your correct email id. Login details for this Free course will be emailed to you
EDUCBA Login

Forgot Password?

By signing up, you agree to our Terms of Use and Privacy Policy.

This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy. By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to our Privacy Policy

Loading . . .
Quiz
Question:

Answer:

Quiz Result
Total QuestionsCorrect AnswersWrong AnswersPercentage

Explore 1000+ varieties of Mock tests View more