Amazon ElastiCache
AWS-managed Redis OSS, Valkey and Memcached, billed on-demand per node or serverless per GB-hour and ECPU.
- Caching
- Yes
- On-demand example: cache.r7g.large at $0.1752/hour. Actual entry price depends on node size and engine chosen.
- Not documented
Who it suits.
Teams already on AWS that want engine choice (Valkey, Memcached or Redis OSS) under one billing model, or that specifically need Valkey's newer durable-persistence option.
Consider something else if…
AWS isn't the target cloud, or the free-tier eligibility window matters — it's restricted to accounts that signed up for AWS Free Tier before July 15, 2025.
Editorial · Palash Bagchi · approved
What the documentation says.
Each value below links to the page it was read from, with the sentence it came from. Criteria Amazon ElastiCache does not publish are not listed.
Pricing
Free tier
Yes
Sources (1) →Sources ↓
- Amazon ElastiCache Pricing ↗
“If you signed up for AWS Free Tier prior to July 15, 2025, you have 750 hours of ElastiCache cache.t3.micro node usage free for up to 12 months.”
Read 2026-09-11 · official pricing
Entry paid plan
On-demand example: cache.r7g.large at $0.1752/hour. Actual entry price depends on node size and engine chosen.
Sources (1) →Sources ↓
- Amazon ElastiCache Pricing ↗
“cache.r7g.large at $0.1752/hour on-demand.”
Read 2026-09-11 · official pricing
Pricing model
Three models: on-demand (hourly per node), serverless (billed on GB-hours of data storage plus ECPUs consumed), or Database Savings Plans for committed use.
Sources (1) →Sources ↓
- Amazon ElastiCache Pricing ↗
“on-demand, serverless, and Database Savings Plans.”
Read 2026-09-11 · official pricing
Caching
Data persistence
Durable on Valkey 9.0+: data is stored persistently. Synchronous writes cost an 18% premium; asynchronous writes carry no additional cost. Redis OSS and Memcached engines are not documented as persistent here.
Sources (1) →Sources ↓
- Amazon ElastiCache Pricing ↗
“Valkey 9.0 offers Durability...allowing you to use ElastiCache as a persistent data store [with] synchronous writes (18% premium) and asynchronous writes (no additional cost).”
Read 2026-09-11 · official pricing
Multi-region replication
Global Datastore provides managed, secure cross-region replication, with outbound cross-region traffic billed at $0.02/GiB.
Sources (1) →Sources ↓
- Amazon ElastiCache Pricing ↗
“ElastiCache Global Datastore enables fully managed, reliable, and secure cross-Region replication. [Outbound traffic] $0.02 per GiB.”
Read 2026-09-11 · official pricing
When these numbers change, hear about it. Sources are re-checked monthly; a repricing goes out as a short note.