Redis|Memcached|Hazelcast|Apache Ignite|Couchbase |Core Differences #inmemory #database #cache

Link: https://youtu.be/VssMPvniV94

Memcached: Memcached is an open-source distributed caching system that is widely used to speed up dynamic web applications by caching frequently used data in memory. It’s a popular choice for large-scale web applications, such as Facebook, Twitter, and Wikipedia.

Redis: Redis is another open-source in-memory data structure store that can be used as a database, cache, and message broker. It supports a wide range of data structures, including strings, hashes, lists, and sets, and is known for its high performance and versatility.

Hazelcast: Hazelcast is an open-source, in-memory data grid that provides distributed caching, distributed computing, and messaging capabilities. It’s designed to be scalable and fault-tolerant and is used by many companies to improve the performance of their web applications.

Apache Ignite: Apache Ignite is a distributed in-memory computing platform that provides distributed caching, distributed computing, and streaming capabilities. It’s designed to be highly performant and scalable and can be used for a wide range of use cases, such as real-time analytics, machine learning, and more.

Couchbase: Couchbase is a NoSQL document database that includes an in-memory caching system called Memcached. It’s designed to be highly scalable and performant and can be used for a variety of use cases, such as web and mobile applications, IoT, and more

Data Structures:
Redis supports a wide variety of data structures, including strings, hashes, lists, sets, and more.
Memcached only supports key-value pairs.
Hazelcast provides support for distributed data structures like maps and queues.
Apache Ignite supports distributed in-memory data grids and provides support for SQL queries.
Couchbase provides a JSON document store with support for SQL and full-text search.
Data Persistence:
Redis provides options for persisting data to disk, including both snapshotting and AOF (append-only file) methods.
Memcached does not provide native support for data persistence.
Hazelcast and Apache Ignite both support data persistence to disk.
Couchbase provides a durable JSON document store with built-in data persistence.
Cluster Scaling:
Redis provides support for horizontal scaling using a technique called sharding.
Memcached supports scaling by adding more servers to the cluster.
Hazelcast and Apache Ignite support both horizontal and vertical scaling by adding more nodes to the cluster or increasing the capacity of existing nodes.
Couchbase provides both horizontal and vertical scaling options and also supports automatic rebalancing of data when nodes are added or removed from the cluster.
Latency and Throughput:
Redis and Memcached both have very low latency and high throughput, making them ideal for use cases that require fast response times.
Hazelcast and Apache Ignite have slightly higher latencies due to their focus on strong consistency guarantees and distributed computing features.
Couchbase provides a balance between low latency and high throughput, with a focus on supporting high-volume transactional workloads.
Adoption and Community:
Redis and Memcached have been widely adopted and have large, active communities of developers.
Hazelcast and Apache Ignite have smaller communities but are gaining traction, particularly in the enterprise market.
Couchbase has a strong enterprise customer base and has been growing in popularity among developers.
Statistics:

Redis is the most widely used caching technology, with over 65% of developers using it in 2021 according to a survey by Stack Overflow.
Memcached is the second most widely used caching technology, with just over 20% of developers using it.
Hazelcast and Apache Ignite have smaller adoption rates, with less than 5% of developers using them according to the same survey.
Couchbase has a similar adoption rate to Hazelcast and Apache Ignite, but with a higher focus on enterprise customers.