ZGC

Cassandra 5.0 AWS CPU Requirements: Graviton4, ZGC, and Performance Optimization

What’s New in 2025

Key Updates and Changes

  • Cassandra 5.0: Enhanced CPU utilization with improved compaction and streaming
  • Graviton4 Processors: 40% better performance for database workloads
  • ZGC Integration: Low-latency garbage collection for improved response times
  • Instance Types: New I8g, R8g, C8g families optimized for Cassandra workloads
  • Compaction Improvements: Better concurrent compactor defaults and tuning

Major Performance Enhancements

  • Unified Compaction: Reduced CPU overhead in Cassandra 5.0
  • Vector Search: CPU-intensive operations requiring additional cores
  • Streaming Performance: Improved parallel processing for data migration
  • Memory Management: Better allocation strategies reducing CPU pressure
  • ARM Optimization: Native ARM64 support for Graviton processors

Cassandra 5.0 CPU Requirements in AWS Cloud

Cassandra 5.0 is highly concurrent and can utilize as many CPU cores as available when configured correctly. Understanding CPU requirements is crucial for optimal performance on AWS EC2 instances.

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Cassandra AWS System Memory Guidelines 2025: Optimizing for Modern Hardware and Workloads

System Memory Guidelines for Cassandra AWS - 2025 Edition

What’s New in 2025

The Cassandra memory landscape has evolved significantly:

  1. Modern JVMs - Java 21 LTS with ZGC and Shenandoah GC offer sub-millisecond pause times
  2. AWS Graviton3 - ARM-based processors with DDR5 memory provide 50% better memory bandwidth
  3. Larger heap sizes - Modern GCs handle 100GB+ heaps efficiently
  4. Container deployments - Memory management in Kubernetes requires different approaches
  5. Persistent memory - Intel Optane and similar technologies blur the line between RAM and storage
  6. Tiered storage - Hot data in memory, warm in NVMe, cold in S3
  7. Vector search workloads - New memory requirements for AI/ML applications

Cloudurable provides Cassandra training, Cassandra consulting, Cassandra support and helps setting up Cassandra clusters in AWS.

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