Amazon EC2 and Amazon ElastiCache service

Today amazon EC2 introduced "Amazon ElastiCache" service.

Behind the fancy name is hidded normal dedicated memcached instances.

As everything in EC2 price is per hour. We decided to do breakdown of Amazon EC2 prices, along with memory you can use.

AWS Instance Name Memory
Hourly Price
Monthly Price
Small 1.30 0.095 70.68
Large 7.10 0.380 282.72
Extra Large 14.60 0.760 565.44
High-Memory Extra Large 16.70 0.560 416.64
High-Memory Double Extra Large 33.80 1.120 833.28
High-Memory Quadruple Extra Large 68.00 2.240 1,666.56

Amazon have one more memcached instance, so called high-cpu instance. However memcached never used so much CPU - it is single process with 4 to 8 threads, so it makes no sence to run this kind of instances.

Traffic to the memcache instance is free if you use same availability zone. If you access the instances from different zones you pay for the traffic.

Since memcached is important part of IT infrastructure, you will not be able to use it only few hours a day. The cache must work all the time, so you will be billed for full month. We agree that using EC2 services is cool, but similar to EC2 MySQL services, those prices for memcached instances are way too expencive.

All specifications are as of 2011-08-23.

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