{"id":2611,"date":"2024-10-14T00:00:20","date_gmt":"2024-10-13T15:00:20","guid":{"rendered":"https:\/\/service.ai-prompt.jp\/?p=2611"},"modified":"2025-01-23T20:11:14","modified_gmt":"2025-01-23T11:11:14","slug":"ai365-346","status":"publish","type":"post","link":"https:\/\/service.ai-prompt.jp\/en\/article\/ai365-346\/","title":{"rendered":"[AI from Scratch] Episode 346: Considerations for Scalability \u2014 Designing for System Expansion"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Recap and Today&#8217;s Theme<\/h2>\n\n\n\n<p>Hello! In the last episode, we discussed how to effectively utilize feedback loops to continuously improve products and services by incorporating user feedback. Properly managing feedback loops helps improve user satisfaction and overall product quality.<\/p>\n\n\n\n<p>Today, we\u2019ll focus on the concept of <strong>scalability<\/strong> in system development. As systems grow, an increase in access volume and data can lead to resource shortages or performance degradation. By designing with scalability in mind, you can maintain performance and efficiently manage resources as your system expands.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What is Scalability?<\/h2>\n\n\n\n<p><strong>Scalability<\/strong> refers to the ability of a system to handle an increasing load of work or expand as needed without compromising performance. A highly scalable system can maintain smooth operation even when access volume or data increases.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Importance of Scalability<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Handling Surges in Traffic<\/strong>:<\/li>\n\n\n\n<li>A system with poor scalability may experience performance drops or downtime when traffic spikes, such as during popular events.<\/li>\n\n\n\n<li><strong>Cost Efficiency<\/strong>:<\/li>\n\n\n\n<li>Scalability allows systems to add resources only when needed, helping avoid unnecessary costs.<\/li>\n\n\n\n<li><strong>Ensuring Long-Term Growth<\/strong>:<\/li>\n\n\n\n<li>A scalable system can grow alongside the project without needing major redesigns or refactoring, reducing long-term maintenance costs.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Two Types of Scalability<\/h2>\n\n\n\n<p>There are two primary types of scalability: <strong>Vertical Scaling<\/strong> and <strong>Horizontal Scaling<\/strong>. Understanding the differences between these approaches helps in designing systems that can adapt to growth efficiently.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Vertical Scaling (Scaling Up)<\/h3>\n\n\n\n<p><strong>Vertical Scaling<\/strong> involves improving the performance of a single server by upgrading its resources, such as adding more CPU, memory, or storage.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Advantages<\/strong>:<\/li>\n\n\n\n<li>Easy to implement without changing the existing system architecture.<\/li>\n\n\n\n<li>Suitable for simple systems where operations can be handled by one server.<\/li>\n\n\n\n<li><strong>Disadvantages<\/strong>:<\/li>\n\n\n\n<li>Limited by the physical capacity of a single server.<\/li>\n\n\n\n<li>Poses the risk of a <strong>single point of failure (SPOF)<\/strong> \u2014 if the server goes down, the entire system fails.<\/li>\n\n\n\n<li><strong>Use Cases<\/strong>: Suitable for small projects or stable systems with predictable traffic patterns.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. Horizontal Scaling (Scaling Out)<\/h3>\n\n\n\n<p><strong>Horizontal Scaling<\/strong> adds more servers to distribute the load, improving system performance by leveraging multiple machines working in parallel.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Advantages<\/strong>:<\/li>\n\n\n\n<li>Allows for nearly infinite scaling by adding more servers as needed.<\/li>\n\n\n\n<li>Load balancing distributes traffic across servers, reducing the risk of a single failure affecting the entire system.<\/li>\n\n\n\n<li><strong>Disadvantages<\/strong>:<\/li>\n\n\n\n<li>More complex to implement, especially in terms of maintaining data consistency across servers.<\/li>\n\n\n\n<li>Additional costs for managing infrastructure and scaling.<\/li>\n\n\n\n<li><strong>Use Cases<\/strong>: Ideal for large-scale projects or services where traffic spikes are expected, such as web services.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Approaches to Building Scalable Systems<\/h2>\n\n\n\n<p>There are several techniques for building scalable systems. By combining these approaches, you can create a system that handles growth efficiently and ensures smooth performance.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. Microservices Architecture<\/h3>\n\n\n\n<p>The <strong>microservices architecture<\/strong> breaks a system into small, independent services that function on their own. Each service can be scaled independently, improving flexibility and scalability.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Advantages<\/strong>:<\/li>\n\n\n\n<li>Individual services can be scaled, upgraded, or improved without affecting the entire system.<\/li>\n\n\n\n<li>Teams can work on separate services independently, boosting development efficiency.<\/li>\n\n\n\n<li><strong>Disadvantages<\/strong>:<\/li>\n\n\n\n<li>More complex in terms of managing communication and maintaining consistency between services, leading to higher operational costs.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2. Load Balancing<\/h3>\n\n\n\n<p><strong>Load balancing<\/strong> distributes incoming traffic across multiple servers, ensuring that no single server is overwhelmed. This improves system stability by ensuring that all servers share the workload evenly.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Advantages<\/strong>:<\/li>\n\n\n\n<li>Prevents overload on individual servers by distributing traffic evenly.<\/li>\n\n\n\n<li>Increases system redundancy by automatically redirecting requests if a server fails.<\/li>\n\n\n\n<li><strong>Disadvantages<\/strong>:<\/li>\n\n\n\n<li>The load balancer itself can become a single point of failure if not properly configured for redundancy.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3. Utilizing Cache<\/h3>\n\n\n\n<p><strong>Caching<\/strong> stores frequently accessed data in memory, reducing the load on the database and improving response times. Cached data can include images, CSS, and other static resources, making web pages load faster.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Advantages<\/strong>:<\/li>\n\n\n\n<li>Reduces the number of database accesses, speeding up request processing.<\/li>\n\n\n\n<li>Improves performance by caching static content.<\/li>\n\n\n\n<li><strong>Disadvantages<\/strong>:<\/li>\n\n\n\n<li>If not managed properly, outdated data may be served, affecting user experience.<\/li>\n\n\n\n<li>Cache management can become complex as the system grows.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4. Database Sharding and Replication<\/h3>\n\n\n\n<p>To distribute database load, <strong>sharding<\/strong> and <strong>replication<\/strong> are used:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sharding<\/strong>: Splits a database into smaller pieces, each managed by a different server, to spread the load.<\/li>\n\n\n\n<li><strong>Replication<\/strong>: Duplicates the database across multiple servers, allowing for faster read operations by distributing the data load.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Scalability in Cloud Environments<\/h2>\n\n\n\n<p>Cloud services like AWS, Azure, and GCP offer flexible, scalable infrastructure, allowing systems to scale up or down as needed. Key features include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Auto-Scaling<\/strong>:<\/li>\n\n\n\n<li>Automatically adjusts the number of servers based on traffic or load, ensuring efficient use of resources.<\/li>\n\n\n\n<li><strong>Serverless Architecture<\/strong>:<\/li>\n\n\n\n<li>Technologies like AWS Lambda handle requests on demand, eliminating the need for server management while scaling resources dynamically.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Summary<\/h2>\n\n\n\n<p>In this episode, we explored the concept of <strong>scalability<\/strong> and the strategies used to design scalable systems. Whether through <strong>vertical scaling<\/strong> or <strong>horizontal scaling<\/strong>, building a scalable system ensures performance and flexibility as your project grows. Using techniques like <strong>microservices<\/strong>, <strong>load balancing<\/strong>, and <strong>cloud services<\/strong>, you can design systems that efficiently manage increased traffic and data.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Next Episode Preview<\/h3>\n\n\n\n<p>In the next episode, we\u2019ll dive into <strong>security measures<\/strong>, discussing basic techniques and practical approaches to protect your system and data from threats.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Notes<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Single Point of Failure (SPOF)<\/strong>: A part of a system that, if it fails, causes the entire system to stop functioning.<\/li>\n<\/ul>\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Recap and Today&#8217;s Theme Hello! In the last episode, we discussed how to effectively utilize feedback loo [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","_locale":"en_US","_original_post":"https:\/\/service.ai-prompt.jp\/?p=2444","footnotes":""},"categories":[71],"tags":[],"class_list":["post-2611","post","type-post","status-publish","format-standard","hentry","category-chapter_12","en-US"],"_links":{"self":[{"href":"https:\/\/service.ai-prompt.jp\/wp-json\/wp\/v2\/posts\/2611","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/service.ai-prompt.jp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/service.ai-prompt.jp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/service.ai-prompt.jp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/service.ai-prompt.jp\/wp-json\/wp\/v2\/comments?post=2611"}],"version-history":[{"count":1,"href":"https:\/\/service.ai-prompt.jp\/wp-json\/wp\/v2\/posts\/2611\/revisions"}],"predecessor-version":[{"id":2622,"href":"https:\/\/service.ai-prompt.jp\/wp-json\/wp\/v2\/posts\/2611\/revisions\/2622"}],"wp:attachment":[{"href":"https:\/\/service.ai-prompt.jp\/wp-json\/wp\/v2\/media?parent=2611"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/service.ai-prompt.jp\/wp-json\/wp\/v2\/categories?post=2611"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/service.ai-prompt.jp\/wp-json\/wp\/v2\/tags?post=2611"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}