Many people think, "A blog is just a few web pages," but in reality, it's far more complex than that. A cloud server runs an entire system—the operating system itself, web service processes, database services, PHP or other script interpreters, all of which compete for memory. Moreover, the resource requirements of different blogging programs vary greatly. For example, a personal blog with static pages generated by Hexo and one with dynamic pages generated by WordPress plus dozens of plugins are completely different. Take WordPress, for instance. The official documentation states a minimum memory requirement of 256MB to 512MB, but based on my years of experience and the cases of friends, a machine with 512MB of memory is basically "barely able to boot, but will crash with even a little bit of traffic." The execution of scheduled tasks in the website's backend, plugin updates, and temporary image processing—any one of these actions can easily exhaust memory. Stress test data shows that the minimum memory requirement for WordPress in actual operation is actually 1GB, but 2GB is recommended to ensure smooth operation of both the front-end and back-end. In other words, if you plan to build a website with WordPress, don't even consider a machine with less than 1GB of RAM; you're just asking for trouble.

　　Static blogs take a completely different technical approach. If you're willing to tinker, static website generators like Hexo, Hugo, and VuePress generate all pages as pure HTML files during the build process. The server simply sends the files to the browser, without needing to run a database or manage a PHP interpreter. This approach has extremely low memory requirements; a 512MB to 1GB server is more than enough, and some people even run it smoothly on a Raspberry Pi. However, the trade-off is that you have to run the build command locally after each article and then manually upload the generated files to the server for Nginx deployment. This is cool for tech enthusiasts, but if you just want to focus on writing and don't want to deal with command lines, static blogs might feel like a lot of hassle. Typecho is a middle ground—this blog system developed by Chinese developers is known for its low resource consumption, claiming that its core code is only 10MB and it can support tens of thousands of daily visits. Many Typecho users will tell you that a single-core, 1GB server can run it very smoothly, even with a dozen or twenty plugins, without much strain.

　　Having discussed the program itself, let's talk about memory allocation. A Linux server, such as the common Ubuntu or CentOS systems, will consume approximately 200MB to 400MB of memory after startup, just for the operating system kernel and basic services. Next is Nginx or Apache as a web server—both are very lightweight and typically only consume tens of MB. The real heavy users are databases like MySQL or MariaDB. They need to load a portion of their indexes and data into memory to speed up queries. For a personal blog scenario, a simple configuration with `innodb_buffer_pool_size` set to 256MB to 512MB is reasonable. Finally, there's the PHP-FPM process pool, whose memory consumption depends on how many child processes you allow to run concurrently. Taking WordPress as an example, its initial memory usage is approximately 1GB to 1.5GB. However, if you install various caching plugins, social sharing plugins, SEO plugins, and visual editor plugins, this number will quickly balloon to over two GB, or even higher. So you see, 2GB of RAM is basically the "minimum acceptable" for a WordPress blog; after installing about ten commonly used plugins, it starts to feel strained. Without a swap partition, insufficient memory can easily lead to process termination, resulting in a blank page and a 502 error.

　　Bandwidth issues are also easily overlooked. Many beginners, upon first seeing a bandwidth specification of "3Mbps," immediately think of "3M download speed"—which is simply a conversion of Mbps. The theoretical peak speed of 3Mbps is approximately 384KB per second, and 5Mbps is approximately 640KB per second. This speed might seem slow for downloading a single file, but for web browsing, a single HTTP request typically retrieves only tens to hundreds of KB of resources, so most of the time it's not too slow. But here's the problem: if your blog page contains a large number of high-resolution images or uncompressed large images, each several hundred KB, then when a user opens your page, the browser will simultaneously request HTML, CSS, JavaScript, and three or four large images, instantly saturating the bandwidth. That's why, with the same configuration, some people find it smooth and fluid, while others experience severe lag—the latter haven't implemented image compression and CDN acceleration. A repeatedly verified rule of thumb in actual operations and maintenance is that, assuming your daily visitor count is below 3000 and the average page size is around one or two MB, then 3Mbps to 5Mbps bandwidth is generally sufficient. A rough estimate can be made using the formula: Required bandwidth ≈ (Daily visitor count × Average page size × 8) ÷ (86400 × Concurrency coefficient). Taking a typical scenario of 5000 daily visitors and an average page size of 50KB, the theoretical bandwidth requirement is approximately 2.3Mbps, making 3 to 5Mbps a safe bet.

　　However, I must point out that bandwidth is a point of confusion in cloud service provider pricing, often highlighted by "low first-year price." Many vendors offer seemingly attractive configurations, such as 1 core, 2GB RAM, and 200Mbps peak bandwidth for only 38 yuan per year. At first glance, 200Mbps seems like a huge sum, but it's actually "peak bandwidth," and the actual base bandwidth used is likely only 3 to 5Mbps. Furthermore, these packages usually explicitly state that they are only suitable for personal blogs and static web pages. In other words, the vendors aren't stupid; they know very well that 200Mbps bandwidth, if fully utilized, simply cannot handle the server's resources.

　　So, regarding specific configurations, what kind of plan is suitable for what kind of blogger? I can offer some practical advice. If your blog content is primarily technical, text-based with few images, and you're not very tech-savvy but want a ready-to-use management interface, then a basic entry-level package from cloud service providers like Alibaba Cloud or Tencent Cloud—one core, two GB of RAM, and three to five Mbps of bandwidth—is perfect. Servers with this configuration typically cost between tens and a hundred yuan per year, offering excellent value. If you have some technical knowledge and are willing to invest time in environment optimization, a two-core, two-GB configuration will make your WordPress run much smoother. Two CPU cores are significantly better than a single core when handling PHP parsing and MySQL queries. A real-world example is quite valuable: a server with two cores, 4GB of RAM, and 5Mbps bandwidth can easily handle dozens of concurrent users accessing WordPress, with virtually no noticeable lag in backend loading. Many experienced bloggers call this configuration a "golden entry-level yet powerful configuration." As for more than 4GB of RAM, it's actually more than enough for most personal blogs. If your blog doesn't get several thousand visits a day, or if you're not running multiple services simultaneously on the same server—for example, a blog, a Git repository, and a server for gaming—then buying 4GB of RAM is basically a waste of money. Experienced users have calculated that even a WordPress blog typically only uses 1GB to 1.5GB of memory under normal access. The remaining 2GB or so is mostly idle, serving no practical purpose other than making your specs look impressive.

　　An even more economical and intelligent approach is to choose a plan with low base bandwidth but elastic scaling from the start, and then configure a CDN. A CDN caches your static resources—images, CSS, JS, etc.—on edge nodes across the country or even globally. When a user accesses your site, they retrieve the data directly from the nearest node, bypassing your origin server's bandwidth. This way, even a server with a low bandwidth of 3Mbps can easily support tens of thousands of daily visits. Cost calculations show that using a CDN can reduce origin server bandwidth requirements by 30% to 50%. A blogger I know used this strategy—he chose the lowest-spec service, then claimed various free quotas from different CDN providers, even storing all his images in object storage. In the end, his monthly cost was less than thirty yuan, and his blog had considerable traffic. So don't think that CDNs are only for big companies; free packages and pay-as-you-go pricing are quite mature now.

　　Besides the parameters mentioned earlier, I want to emphasize an easily overlooked point: storage type and backup space. Many people only focus on CPU and memory, ignoring hard drive speed. You absolutely, absolutely, absolutely must choose an SSD. The random read/write speed and IOPS of a mechanical hard drive are five to ten times slower than an SSD, severely impacting your database queries and system startup. Many low-priced entry-level machines come with high-efficiency or even ordinary cloud disks by default, but spending a little more to upgrade to an SSD or ESSD is definitely worthwhile. I recommend a system disk size of at least 40GB, because although WordPress itself only occupies a few hundred MB, system log files, cached data, database binary logs, and regular backups will quickly expand. If your blog contains a large number of images and attachments, it's best to mount a separate data disk to store these media files. Don't let them share the same partition as your system, otherwise the disk may become full and cause service crashes.

　　Now, in 2026, the cloud computing market has changed again. Lightweight application servers have almost become the first choice for individual bloggers because they bundle CPU, memory, hard drive space, and bandwidth, and come pre-installed with one-click deployment application images. You don't need to configure VPCs, security groups, or elastic IPs yourself—it's ready to use right out of the box. This saves a lot of trouble for beginners unfamiliar with cloud networks. If you want to configure Nginx and PHP-FPM from scratch, pursuing ultimate control and customization—then traditional ECS or CVM might be what you need, offering more flexible configurations, but correspondingly requiring a higher technical skill level.

　　In conclusion, 2GB of memory, 3 to 5Mbps bandwidth, a dual-core CPU, plus at least 40GB of SSD space and free CDN—this is currently the most cost-effective starting point for personal blogs in 2026. If you're using a static generator or Typecho for your blog, you can downgrade your configuration to 1 core and 1GB of RAM. If you're determined to use WordPress and will be installing a dozen or more heavy plugins, it's best to start with a 2-core, 4GB configuration to leave some leeway for the future. Regardless of your choice, remember to calculate the renewal price for the second year before purchasing, compare your CDN free allowance, and check if your images are compressed—sometimes switching from PNG to WebP format can halve the bandwidth load. A blog, in essence, is written for people to read; what you write is far more important than the price of your server. A machine with just the right performance, plus some reasonable optimization, is perfectly sufficient to support good content creation.