Google Cloud Fundamentals: Core Infraestructure - Virtual Machines and Networks in the Cloud -> Cloud balancing and Cloud DNS/CDN
Cloud Load Balancing: Distributing Traffic for Scalable Applications
As your application scales with fluctuating user demands, Cloud Load Balancing ensures smooth operation by efficiently distributing traffic across multiple virtual machines.
What is Cloud Load Balancing?
- A fully managed, software-defined service for traffic distribution.
- Eliminates the need for manual load balancer management.
- Supports various traffic types: HTTP/HTTPS, TCP/SSL, and UDP.
Benefits:
- Reduced Risk of Performance Issues: Distributes user traffic across multiple VMs, preventing bottlenecks.
- Automatic Scaling: Scales up or down automatically in response to changing traffic patterns.
- Cross-Region Load Balancing: Balances traffic across regions with automatic multi-region failover for improved reliability.
- Fast Response Times: Reacts quickly to changes in user traffic, ensuring a smooth user experience.
- No Pre-warming Required: Instantly handles traffic spikes without prior notification.
Cloud Load Balancing Options:
- Global HTTP(S) Load Balancing: Ideal for cross-region load balancing of web applications.
- Global SSL Proxy Load Balancer: For Secure Sockets Layer (SSL) traffic that isn't HTTP.
- Global TCP Proxy Load Balancer: Handles non-SSL TCP traffic on specific ports.
- Regional External Passthrough Network Load Balancer: Load balances UDP traffic or traffic on any port number within a region.
- Regional Internal Load Balancers: For load balancing internal traffic within your project (presentation layer to business layer). Supports Proxy Network, Passthrough Network, and Application load balancers.
- Google Cloud Cross-region Internal Load Balancer: Layer 7 load balancer for globally distributed backend services, ensuring traffic reaches the closest backend for optimal performance.
Cloud DNS and Cloud CDN
Cloud DNS: Reliable and Scalable Domain Name Resolution
- Leverages Google's robust DNS infrastructure, the same behind the popular 8.8.8.8 public DNS service.
- Offers high availability and low latency for efficient routing of user requests to your applications.
- Cost-effective solution for making your applications and services discoverable by users worldwide.
- Global reach: DNS information is served from geographically distributed redundant locations.
- Programmable DNS Management:
- Manage millions of DNS zones and records through the user-friendly Cloud Console, command-line interface, or API.
Cloud CDN: Accelerating Content Delivery
- Integrates seamlessly with Cloud Load Balancing for streamlined content delivery.
- Leverages Google's global network of edge caches to store content closer to end users.
- Benefits:
- Reduced network latency for users: Faster loading times for your application content.
- Decreased load on your application origins: Improves application performance and scalability.
- Potential cost savings: Reduced bandwidth usage due to content caching.
- Easy Integration: Enable Cloud CDN with a single checkbox after setting up HTTP(S) Load Balancing.
- Compatibility: Works with existing CDNs through Google Cloud's CDN Interconnect partner program.
In summary, Cloud DNS and Cloud CDN work together to ensure easy discovery and fast access to your applications built on Google Cloud. They provide a reliable and scalable foundation for delivering a seamless user experience.
