Table of Contents
What is Redis
An open source, the BSD licensed Redis is in-memory data structure store. It is used as broker for cache, message and database.Various data structures like hashes, strings, sets, lists, sorted sets with range queries, hyper logs, bitmaps, geospatial indexes with radius, stream and queries are supported by it. It has got Lua scripting, a built-in replication, transactions LRU eviction andmultiple levels of ondisk persistence. It offers high availability through Redis Sentinel as well as automatic partitioning with Redis Cluster.
In-Memory Data Caching for Improvement of Application Performance
One of the most viable strategies for the development ofthe overall application performance as well as minimising database is in-memory data caching. Itcan be applied to all types of database that includes relational databases like Amazon Relational Database Service or Amazon RDS or NoSQL, Databases like MongoDB, Amazon DynamoDB and Apache Cassandra. People opt for caching because it’s easy implementation. The speed as well as scalability of an applicationwill also is improved.
Different Types of Database Caching
Supplementing the primary database with the action of removal of unnecessary pressure on it mostly in the form of often accessed read data is often done. The cache can live in various areas that includes database, in the application, or as a standalone layer.
The three most known types of database caches are as follows:
- Caches that are Database-integrated: There are multiple data bases available in the market like Amazon Aurora. They offer an integrated cache which is organised within the database engine. They have built-in and write-through capabilities as well.Updating of thedatabase automatically happens when the underlying data alters. In the application, tier is important to utilise this cache.
- Local caches: By storing the frequently used data within the application, local cache helps in faster data retrieval in comparison to other caching architectures. This happens because it removes network traffic which is associated with retrieving data.
- Remote Cache: A remote cache or what is often called “side cache” is a separate instance or rather instances that are dedicated for storing the cached data in-memory. Stored on dedicated servers, remote caches are typically built on key or value NoSQL stores like Redis2 and Memcached. They offer hundreds of thousands and tillalmost up to a million requests per second per cache node. Amazon ElastiCache for Redis and multiple other solutions also offer the high availability that is required for important and heavy workloads. Redis Cache is extremely useful.
- Azure Cache for Redis: Azure Cache for Redis offers an in-memory data store. This is based on the open-source software Redis. Thisadvances and increases thescalability as well as the performance of an application which utilizes on backend data stores heavily. It has the ability to process multiple large volumes of application request. This is done by storing frequently accessed data in the server memory. These server memorieshave the capacity to be written to and read from very quickly. Redis offers an important low-latency as well as high-throughput data storage solution to the various modern and advanced applications.
Redis is offered on Azure Cacheas a managed service. Security and dedicated Redis server instances as well as complete Redis API compatibility are offered through it. The service, operated by Microsoft, is hosted on Azure. It is accessible to any application which is within or even outside of Azure.
Having the ability to be distributed data or content cache, a message broker, a session store and more, azure redis Cache can be deployed as a standalone or even can go along side with other Azure database service, like Azure SQL or Cosmos DB.
Redis pricing can be personalized according to the users needs in some cases.
Installation of Redis On Windows
One can download a moderately out-of-date precompiled version of Redis for 32-bit and 64-bit Windows. After redis window has downloaded Redis, one need to extract the executables from the zip file.Usage of a version of Windows that more recent than Windows XP, extraction of Redis without any additional software can be done.