Tengxun cloud partner: how to accurately select tengxun cloud CDB specifications according to business traffic without wasting money
In the cloud-native era, databases are often the most expensive asset in the entire IT architecture.
Before the project goes online, many technical leaders or start-up teams often fall into two extremes due to the lack of accurate estimation of business visits: either "lack of firepower phobia", blindly pursuing high configuration, and directly filling up the core specification of 128G of 32 cores. As a result, the CPU utilization rate is less than 5% per day, and a large budget is wasted. Either "extremely overestimate the architecture" and choose a basic version of 1-core 2G in order to save money, as a result, the number of database connections (Max Connections) was exploded directly by instantaneous concurrent traffic, and the system was instantly paralyzed.
As an architect who deals with servers and databases all the year round, I don't talk about virtual performance metrics today, directly from
Business visits (QPS/TPS), concurrency, and data volume
Three pragmatic dimensions teach you how to accurately select the specifications of Tencent's cloud database MySQL(CDB) and spend every penny on the blade.
The premise of accurate 1. selection: understand the two core indicators of Tencent cloud CDB.
When selecting CDB in Tengxun cloud console, you will see a dazzling array of configuration items. However, there are only two cores that determine the carrying capacity and price of the database:
CPU and memory (computing specifications): Memory size directly determines how much data can be cached in the InnoDB buffer pool of the database. The larger the memory, the higher the hit rate of hot data, the less disk I/O, and the faster the response speed.
Storage type and IOPS (storage specification): Tencent Cloud provides general-purpose SSD, speed SSD, etc. IOPS (number of input and output operations per second) determines the speed at which the database reads and writes to the hard disk. For write-more-read-less business, the priority of the storage type is even higher than that of the CPU.
2. Practical Selection Guide: "check in" against your business visits"
We divide common business scenarios into four orders of magnitude that you can select directly against your own business phase.
1. Micro/start-up business (daily average IP < 5000,QPS peak <200)
Typical scenarios: corporate official website, personal blog, development test environment, the initial stage of small programs.
Specification suggestion: 2-core 4G or 2-core 8G, with universal SSD.
Architect accounts: There is almost no concurrent pressure on the business at this stage, and the bottleneck is mainly development efficiency. Tengxunyun CDB's 2-core 4G specification can easily cope with hundreds of people online at the same time. At this time, it is not recommended to buy any master-slave high-availability version, directly select "basic version (single node)" as the starting point, and then you can seamlessly upgrade to the high-availability version with one click.
2. Medium-sized growth business (daily average IP 10000-50000, QPS peak 500 - 1500)
Typical scenarios: local e-commerce, CRM systems that rely heavily on databases, vertical communities, online education platforms
Taiwan.
Specifications: 4-core 16G or 8-core 32G, highly available version (one main and one standby), extreme SSD.
Architect accounts: At this volume, the business begins to have a strong demand for "high availability" and a single point of failure is absolutely unacceptable. The 4-core 16G is the "golden cost-effective connection point" for highly available databases ". At this time, read-write separation should be turned on, so that the main library is fully responsible for write operations, and the read-only instance (Read-Only Replica) provided by Tengxun Cloud should be used to carry the query traffic.
3. large/high concurrent services (daily average IP> 100000, QPS peak 3000 - 8000)
Typical scenarios: game debut, national e-commerce promotion, SaaS platform core library.
Specification suggestion: 16-core 64G or 32-core 128G, highly available version/three-node enterprise version (financial grade).
Architect accounts: At this time, the physical memory must be able to cover more than 80% of the hot data of the business. If there is not enough memory, the database will frequently generate "disk physical I/O", resulting in thread blocking and a surge in the number of connections. At this time, it is necessary to push up the specifications without brains, but it is more necessary to combine TDSQL, a distributed database of Tencent Cloud, or to do architectural dimension reduction through sub-library and sub-table.
3. to avoid pit and save money closed loop: non-technical dimension of the budget optimization strategy.
Pick the right technical specifications, only half the success. In the actual landing of commercial projects, how to open up the safe closed loop of business, capital and account is the key to determine whether an enterprise can truly "not spend unjust money.
Many technical teams only select the console, but ignore the optimization of the procurement channel. The following three pragmatic compliance paths can help you reduce CDB's procurement costs by another 30% to 50%:
Building the Cornerstone of Compliance: The Normative
Purchase a Tencent Cloud account
No matter what size CDB you buy, don't use employees' personal accounts or retail accounts of unknown origin for convenience. At the beginning of the project, enterprises must purchase Tencent cloud accounts through compliant and secure official channels and complete enterprise real-name authentication. A clean, compliant, and highest authority master account in the hands of the enterprise master can not only enjoy the huge amount of official database vouchers for new enterprise customers, but also the underlying iron law for subsequent data disaster tolerance, cross-account migration and security audit.
With the help of professional external brain: binding tengxunyun agents many people do not know, tengxunyun has a perfect ecological partnership mechanism. After selecting the database specifications, do not place orders directly according to the original price of official website, and contact the compliant ones first.
Tencent Cloud Reseller
. Technical level: Agents are usually equipped with senior database DBA certified by Tengxun Cloud. They can help you review SQL statements free of charge to see if there are any bad SQL without indexing. Sometimes optimizing a few lines of code can save you from upgrading 4-core 16G to 8-core 32G, saving real money directly. Business level: agents can provide official website according to your annual fixed budget.
Some have exclusive long-term discounts and contract year-to-year discounts, allowing companies to buy higher-spec CDB resources at lower prices.
Eliminate the risk of overdue downtime: Leverage
Tencent Cloud top-up service
When flexible expansion promotes large-scale or sudden marketing activities, the database often needs to be temporarily "flexible allocation" (such as temporarily upgrading 4 cores to 16 cores). Such deductions for volume-based or temporary upgrades are extremely rapid. If the enterprise financial process is stuck, resulting in insufficient account balance, the database is at risk of being restricted to write due to arrears at any time, which is catastrophic in the production environment. Through the agent to recharge on behalf of Tengxunyun, enterprises can not only enjoy the convenience of multi-currency and compliance invoices, but also apply for emergency advance credit from agents or officials at the emergency juncture of sharp increase in business traffic, so as to ensure that the database is absolutely continuous in the flow peak.
4. summary: Dynamic evolution is the most advanced money saving.
No architecture is set in stone. The biggest advantage of Tencent Cloud CDB lies in its strong
Online seamless elastic upgrade
Ability.
A truly brilliant technical director will never buy a database to support the business after three years. The most economical and scientific approach is:
At the beginning of the project, strictly according to the current QPS estimate, close to the business line to buy just enough, slightly surplus specifications (such as 2 cores 8G);
Do a good job of performance monitoring, when the cloud monitoring (Cloud Monitor) of tengxun cloud console shows that the CPU utilization rate exceeds 70% for a long time, or the number of slow queries (Slow Query) increases sharply;
Combined with the exclusive discount of agents, during the low period of late-night business, one-click smooth and flexible upgrade to higher specifications.
Combining refined technology selection with compliant and efficient cloud ecological procurement channels (account numbers, agents, and recharge) is the ultimate standard answer for modern enterprises to reduce costs and increase efficiency in the cloud.