5 Aspects to Consider When Dealing with Redis

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5 Aspects to Consider When Dealing with Redis

Modern applications have a usual list of requirements to not only survive but progress in today's quick-paced cloud environments. These include quicker response times (less than 100 milliseconds), unlimited scalability, big availability, and considerable performance.

Redis is an open-source data structure server. It has gained popularity as one of the most famous options with developers among a swarm of latest database options for speed and performance.

Redis is also the most demanding database containing social apps and online gaming and advertising also.

Hence, there are 5 primary aspects you should take care of while using this technology:

1. Maintain Record of your Keys with Redis Namespace

Databases might store information, however, any database development company can miss the log of some of the information you’re publishing into this server. This can be due to the application’s requirements being dynamic or you changing the method of storing data. Maybe a module of the application has become outdated or you’ve ignored to stop using some of the keys.

Regardless of the case, it is highly likely that some information in your database you cannot consider as usable and is occupying unnecessary space. Due to Redis’s schema-less structure, it can be complicated for your dataset contents unless a good nomenclature is used.

If you use a proper naming method with Redis’ namespace you can maintain your database much better. While naming your keys via service or app it is convenient to use the colon (‘:’) to determine the limit of the key name. This is the best practice for Redis’ namespace. In this way, you can easily recognize them during data conversion, migration, expiration, or switch. This identification is supported by the Redis namespace and keys.

Besides namespace, the secondary data store is also a common use case for Redis development to store “hot” data pieces. This happens when you keep the majority of the data in some other database. Developers at times, forget to delete the data from this database while it is transferred to a basic data store.

There needs to be quick-paced delete in this kind of cross-datastore arrangement and can be incorporated by tagging all the indicators for a data component in this database set. It proceeds to a cleanup process after termination from the basic data store which only needs to go through that set’s contents to delete all legitimate copies. This includes the set itself once done.

2. Rely on perfect Data Structures

Depending upon the memory capturing or performance, maybe one data structure is a better option for your data components than another. Below are some practices to follow:

  • a) Try to group related data with a data structure instead of keeping your data in plenty of specific string values. Hashes can be effective and lower memory usage. They also provide the added value to retrieve some of the components to improve the readability of your code.
  • b) If applicable, use reply on lists rather than sets. In case you don’t need the set’s properties for making sure about the individuality or checking membership, a roster will take less space and operate as inserts quicker.
  • c) In terms of both, basic operations complications and memory consumption, defined sets are considered to be the most costly data system. Try to use hashes if you are only up to scores and its partner does not matter.
  • d) Bitmaps are quite often an ignored aspect in Redis development. You can perform many bit-level activities on Redis values that contain a big amount of data effectively. This can also be used for some lightweight evaluation.

3. Do not count on KEYS, rather rely on SCAN

The SCAN start with Redis v2.8, enabling you to acquire keys via a cursor in the keyspace. This is not like the behavior of the KEYS command that gives back all matching elements. It is in fact, considered dicey in production as it may prevent your Redis database and also deplete its RAM resources. With SCAN, you can inspect data without stopping your server or counting on a slave.

SCAN needs you to interpret a cursor value that is transferred to the call to SCAN. It also agrees with a keynote pattern and a non-mandatory count argument. Between KEYS and KEYS, you can also gain the same key name multiple times via SCAN.

It is carried by HSCAN, SSCAN, and ZSCAN that help you to use the contents of sets, sorted sets and hashes.

4. Keep log of the stretch of your key names

In contrast with the above point, key names require memory too so you should keep short and easy to remember names. This can become a problem with datasets that contain millions and trillions of keys. However, large keys are attached with any hashtable at a cost.

For instance: take into account that keeping 1,000,000 keys with Redis namespace, every set consists of a 32 character value and it covers 96MB.  This is when you are opting for 6-character key names. 111MB will contain 12-character names (on 32-bit Redis database). This is an increase of more than 15?comes important as your number of keys increases. With Redis, eliminating keys with prefixes is also a probability.

5. Use of Server-Side Lua Scripts

Once you realize Redis’ potential to handle Lua scripts, you will be navigating familiar ground. Lua provides you with your creativity to code that operates within the Redis server as it is one of the easiest languages to pick up. If applied perfectly, Lua can make all the difference in the world based on resource consumption and performance. Scripts can execute logic close to the information instead of bringing data that decrease unnecessary transmission of data and network latency.

One of the best examples is Lua’s impact that happens when you are acquiring silo of data from Redis to only sort or aggregate in your app. By enclosing the flowchart in a script you just need to put it to get a comparatively smaller answer in a fraction of second and the resources.

Although Lua can be amazing, once you switch workflows to it you will realize that handling and error reporting is much difficult. One of the tricks is utilizing Redis’ Sub/Pub and making your scripts post their “log” communications to a specific channel. After that, arrange a subscriber method to retrieve these messages and maintain them.


These are the most important aspects that you must keep in mind when using Redis development services as your database to make the best out of it. Better to hire Redis Developer from a Database Development Company offering high-end database development services.

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