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memcached VS Heroku Redis

Compare memcached VS Heroku Redis and see what are their differences

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memcached logo memcached

High-performance, distributed memory object caching system

Heroku Redis logo Heroku Redis

Reliable and powerful Redis as a service.
  • memcached Landing page
    Landing page //
    2023-07-23
  • Heroku Redis Landing page
    Landing page //
    2023-07-04

memcached features and specs

  • High Performance
    Memcached is incredibly fast and efficient at caching data in memory, enabling quick data retrieval and reducing the load on databases. Its in-memory nature significantly reduces latency.
  • Scalability
    Memcached can be easily scaled horizontally by adding more nodes to the caching cluster. This allows it to handle increased loads and large datasets without performance degradation.
  • Simplicity
    Memcached has a simple design and API, making it easy to implement and use. Developers can quickly integrate it into their applications without a steep learning curve.
  • Open Source
    Memcached is free and open-source software, which means it can be used and modified without any licensing fees. This makes it a cost-effective solution for caching.
  • Language Agnostic
    Memcached supports multiple programming languages through various client libraries, making it versatile and suitable for use in diverse tech stacks.

Possible disadvantages of memcached

  • Data Volatility
    Memcached stores data in RAM, so all cached data is lost if the server is restarted or crashes. This makes it unsuitable for storing critical or persistent data.
  • Limited Data Types
    Memcached primarily supports simple key-value pairs. It lacks the rich data types and more complex structures supported by some other caching solutions like Redis.
  • No Persistence
    Memcached does not offer any data persistence features. It cannot save data to disk, so all information is ephemeral and will be lost on system reset.
  • Size Limitation
    Memcached has a memory limit for each instance, thus, large-scale applications may need to manage multiple instances and ensure data is properly distributed.
  • Security
    Memcached does not provide built-in security features such as authentication or encryption. This can be a concern in environments where data privacy and security are critical.

Heroku Redis features and specs

No features have been listed yet.

memcached videos

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Course Preview: Using Memcached and Varnish to Speed Up Your Linux Web App

Heroku Redis videos

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Category Popularity

0-100% (relative to memcached and Heroku Redis)

memcached

Heroku Redis

Databases
90 90%
Databases
10% 10
NoSQL Databases
91 91%
NoSQL Databases
9% 9
Key-Value Database
100 100%
Key-Value Database
0% 0
Testing
0 0%
Testing
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare memcached and Heroku Redis

memcached Reviews

Redis vs. KeyDB vs. Dragonfly vs. Skytable | Hacker News
Quick ask: I don’t see “some” of the other offering out there like MemCached… what was the criteria used to select these? I don’t see any source of how the test where run, specs of the systems, how the DB where set up, etc. Would be very valuable to have in order to attempt to re-validate these test on our own platform. I also came back and saw some of your updates...
Source: news.ycombinator.com
Memcached vs Redis - More Different Than You Would Expect
So knowing how the difference between Redis and memcached in-memory usage, lets see what this means. Memcached slabs once assigned never change their size. This means it is possible to poison your memcached cluster and really waste memory. If you load your empty memcached cluster with lots of 1 MB items, then all of the slabs will be allocated to that size. Adding a 80 KB...
Source: engineering.kablamo.com.au
Redis vs. Memcached: In-Memory Data Storage Systems
Memcached itself does not support distributed mode. You can only achieve the distributed storage of Memcached on the client side through distributed algorithms such as Consistent Hash. The figure below demonstrates the distributed storage implementation schema of Memcached. Before the client side sends data to the Memcached cluster, it first calculates the target node of the...
Source: medium.com
Why Redis beats Memcached for caching
Both Memcached and Redis are mature and hugely popular open source projects. Memcached was originally developed by Brad Fitzpatrick in 2003 for the LiveJournal website. Since then, Memcached has been rewritten in C (the original implementation was in Perl) and put in the public domain, where it has become a cornerstone of modern Web applications. Current development of...
Source: www.infoworld.com

Heroku Redis Reviews

We have no reviews of Heroku Redis yet.
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Social recommendations and mentions

Based on our record, memcached seems to be a lot more popular than Heroku Redis. While we know about 36 links to memcached, we've tracked only 3 mentions of Heroku Redis. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

memcached mentions (36)

  • MySQL Performance Tuning Techniques
    Memcached can help when lightning-fast performance is needed. These tools store frequently accessed data, such as session details, API responses, or product prices, in RAM. This reduces the laid on your primary database, so you can deliver microsecond response times. - Source: dev.to / 2 months ago
  • 10 Best Practices for API Rate Limiting in 2025
    In-memory tools like Redis or Memcached for fast Data retrieval. - Source: dev.to / 3 months ago
  • Outgrowing Postgres: Handling increased user concurrency
    A caching layer using popular in-memory databases like Redis or Memcached can go a long way in addressing Postgres connection overload issues by being able to handle a much larger concurrent request load. Adding a cache lets you serve frequent reads from memory instead, taking pressure off Postgres. - Source: dev.to / 3 months ago
  • API Caching: Techniques for Better Performance
    Memcached — Free and well-known for its simplicity, Memcached is a distributed and powerful memory object caching system. It uses key-value pairs to store small data chunks from database calls, API calls, and page rendering. It is available on Windows. Strings are the only supported data type. Its client-server architecture distributes the cache logic, with half of the logic implemented on the server and the other... - Source: dev.to / 7 months ago
  • story of upgrading rails 5.x to 7.x
    The app depends on several packages to run, so I need to install them locally too. I used a combination of brew and orbstack / docker for installing packages. Some dependencies for this project are redis, mongodb and memcache. - Source: dev.to / 8 months ago
View more

Heroku Redis mentions (3)

  • Redis To Go shutting down on August 8 2022
    Heroku's own redis addon[1] has a comparable free tier and while I can't be certain, I'm pretty sure it's been beefed up recently, as I just had to migrate away from RedisToGo and I would have chosen Heroku's own addon over RedisToGo originally unless there was a compelling reason not to. [1] https://elements.heroku.com/addons/heroku-redis. - Source: Hacker News / almost 3 years ago
  • How to be production-ready with Redis for Django?
    You'll need to be connecting to an external Redis server, e.g. https://elements.heroku.com/addons/heroku-redis. Source: almost 4 years ago
  • The Decline of Heroku
    FYI: Looks like $60/month for 250 MB and 200 connections. (The smaller instances don't allow many connections, but the $30/month one could work for dev/qa.) https://elements.heroku.com/addons/heroku-redis. - Source: Hacker News / about 4 years ago

What are some alternatives?

When comparing memcached and Heroku Redis, you can also consider the following products

Redis - Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.

Redis Cloud - Redis Cloud is a fully-managed cloud service for hosting and running Redis datasets.

MongoDB - MongoDB (from "humongous") is a scalable, high-performance NoSQL database.

Redis To Go - Simple Redis Hosting

Aerospike - Aerospike is a high-performing NoSQL database supporting high transaction volumes with low latency.

ngrok - ngrok enables secure introspectable tunnels to localhost webhook development tool and debugging tool.

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