What is the difference between Basic and Standard tier in Memorystore for Redis?

Basic tier provides a single Redis instance with no replication or SLA, suitable for caching where data loss on failure is acceptable. Standard tier adds a replicated standby instance with automatic failover and a 99.9% availability SLA. Standard tier costs roughly double Basic tier for the same capacity.

How do read replicas work in Memorystore for Redis?

Read replicas (available in Standard tier) are additional Redis instances that asynchronously replicate data from the primary. They handle read traffic to increase aggregate throughput and reduce latency for read-heavy workloads. You can add up to five read replicas, each billed at the same rate as the primary instance.

Memorystore Cost Estimator

StorageGCP

Estimate Memorystore costs for Redis and Memcached with tier comparison, HA, and read replica pricing.

Memorystore Configuration

Example Presets

Engine

Tier

No replication. Single node, no failover.

Instance Size (GB)

1 GB1 GB100 GB

About Memorystore

Redis vs Memcached

Redis supports persistence, pub/sub, Lua scripting, and complex data structures. Memcached is a simpler, multi-threaded cache ideal for high-throughput key-value workloads. Redis is typically preferred for its versatility; Memcached for raw caching speed with multi-threaded architecture.

Basic vs Standard Tier

Basic tier provides a single Redis node with no replication or failover. Suitable for development and non-critical workloads. Standard tier adds automatic failover with a replica, ensuring high availability for production use. Standard tier also supports read replicas (up to 5) for read-heavy workloads.

Read Replicas

Available only on the Standard tier, each read replica is a full copy of the primary instance. Replicas add the same hourly cost as the primary. They distribute read traffic and provide additional redundancy. Up to 5 replicas can be added per instance.

Sizing Guidance

Choose instance size based on your working dataset plus 25-30% overhead for Redis internals. For Memcached, account for slab allocation overhead. Use multiple smaller Memcached nodes rather than one large node for better distribution. Monitor eviction rates and hit ratios to right-size your instances over time.

Comparison with Self-Managed

Memorystore eliminates operational overhead of managing Redis/Memcached clusters yourself on Compute Engine. Self-managed instances may cost less in raw compute but require patching, monitoring, backup configuration, and failover management. Memorystore provides automated failover, patching, and monitoring out of the box, making it cost-effective for teams that value operational simplicity. For very large deployments, compare the fully-loaded cost (including engineer time) of self-managed vs Memorystore.

Raw Output

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About This Tool

The Memorystore Cost Estimator calculates monthly costs for Google Cloud Memorystore for Redis and Memorystore for Memcached. For Redis, it covers Basic and Standard tiers with optional read replicas for increased read throughput, as well as capacity tiers ranging from 1 GB to 300 GB. For Memcached, it models costs by node type and count. The tool compares tier features side by side, including high availability with automatic failover in Standard tier, and helps you understand the cost implications of adding read replicas. It is ideal for teams building caching layers, session stores, or real-time leaderboards on GCP.

When to Use This Tool

•Estimating monthly costs for a Standard-tier Memorystore Redis instance with 10 GB capacity and two read replicas.
•Comparing Memorystore Redis Basic versus Standard tier to decide if high availability justifies the cost premium.
•Sizing a Memorystore Memcached cluster for a web application session cache with predictable memory requirements.
•Evaluating Memorystore Redis pricing against self-managed Redis on Compute Engine VMs for a latency-sensitive workload.

Frequently Asked Questions

What is the difference between Basic and Standard tier in Memorystore for Redis?: Basic tier provides a single Redis instance with no replication or SLA, suitable for caching where data loss on failure is acceptable. Standard tier adds a replicated standby instance with automatic failover and a 99.9% availability SLA. Standard tier costs roughly double Basic tier for the same capacity.
How do read replicas work in Memorystore for Redis?: Read replicas (available in Standard tier) are additional Redis instances that asynchronously replicate data from the primary. They handle read traffic to increase aggregate throughput and reduce latency for read-heavy workloads. You can add up to five read replicas, each billed at the same rate as the primary instance.

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