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Cloud Platforms > Google Cloud Platform (GCP) > Cloud Memorystore

Cloud Memorystore

Author: Venkata Sudhakar

Google Cloud Memorystore is a fully managed in-memory data store service for Redis and Memcached. It provides a highly available, scalable, and secure in-memory cache that enables sub-millisecond data access for applications.

Key Features:

1. Fully managed - Automated provisioning, replication, failover, and patching.

2. Redis & Memcached - Supports both Redis (6.x, 7.x) and Memcached.

3. High availability - Standard tier provides automatic failover with 99.9% SLA.

4. Sub-millisecond latency - Ideal for session storage, caching, and real-time leaderboards.

5. VPC integration - Private connectivity via VPC for enhanced security.

The below example shows how to connect to Cloud Memorystore Redis and perform common operations using Java Jedis client.

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import java.util.List;
import java.util.Map;

public class CloudMemorystoreExample {
    public static void main(String[] args) {
        // Connect to Cloud Memorystore Redis instance
        String redisHost = "10.0.0.3"; // Memorystore private IP
        int redisPort = 6379;

JedisPoolConfig poolConfig = new JedisPoolConfig();
        poolConfig.setMaxTotal(10);

try (JedisPool pool = new JedisPool(poolConfig, redisHost, redisPort);
             Jedis jedis = pool.getResource()) {

// String operations
            jedis.set("user:1001:name", "Alice Smith");
            jedis.setex("user:1001:session", 3600, "session-token-abc123");
            System.out.println("Name: " + jedis.get("user:1001:name"));

// Hash operations (user profile)
            jedis.hset("user:1001:profile", "email", "alice@example.com");
            jedis.hset("user:1001:profile", "role", "admin");
            jedis.hset("user:1001:profile", "points", "1500");
            Map<String,String> profile = jedis.hgetAll("user:1001:profile");
            System.out.println("Profile: " + profile);

// Sorted set (leaderboard)
            jedis.zadd("game:leaderboard", 9800, "Alice");
            jedis.zadd("game:leaderboard", 8500, "Bob");
            jedis.zadd("game:leaderboard", 9200, "Carol");
            List<String> top3 = jedis.zrevrange("game:leaderboard", 0, 2);
            System.out.println("Top 3: " + top3);
        }
    }
}

It gives the following output,

Name: Alice Smith
Profile: {[email protected], role=admin, points=1500}
Top 3: [Alice, Carol, Bob]

Redis vs Memcached on Memorystore:

Redis - Rich data structures (strings, hashes, lists, sets, sorted sets), persistence, pub/sub, Lua scripting. Best for caching, session management, leaderboards, and message queuing.

Memcached - Simple key-value store, multi-threaded, ideal for simple distributed caching of large datasets with no persistence requirement.

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