How Do I Select Service QPS When Purchasing WAF?
WAF does not limit the protection bandwidth or shared bandwidth. It limits the service bandwidth and QPS. For details about service QPS, see Edition Differences.
What Is QPS?
- For web applications deployed on Huawei Cloud
QPS: 1,000 (Each HTTP GET request is a query.)
- For web applications not deployed on Huawei Cloud
QPS: 1,000 (Each HTTP GET request is a query.)
![](https://support.huaweicloud.com/intl/en-us/waf_faq/public_sys-resources/notice_3.0-en-us.png)
- If you want to use the ELB access mode, make sure you are using standard, professional, or platinum cloud WAF. When you are using cloud WAF, the quotas for the domain name, QPS, and rule extension packages are shared between the ELB access and CNAME access modes.
- The bandwidth limit applies only to websites added to WAF in cloud CNAME access mode. Websites added to WAF in cloud ELB access mode have no bandwidth limit but only QPS limit.
For details about QPS expansion packages, see Expansion Packages.
Before buying WAF, confirm the total inbound and outbound peak traffic of the websites to be protected by WAF. Ensure that the bandwidth of the WAF edition you select is greater than the total inbound peak traffic or the total outbound peak traffic, whichever is larger.
What Is Traffic?
Attack traffic must be removed in your estimations. For example, if your website is being accessed normally, WAF routes the traffic back to the origin ECS, but if your website is under attack, WAF blocks and filters out the illegitimate traffic, and routes only the legitimate traffic back to the origin ECS. The inbound and outbound traffic of the origin ECS you view on the ECS console is the normal traffic. If there are multiple ECSs, collect statistics on the normal traffic of all ECSs. For example, if you have six sites and the peak outbound traffic of each site does not exceed 2,000 QPS, then the total peak traffic volume does not exceed 12,000 QPS. In this case, you can buy the WAF platinum edition.
![](https://support.huaweicloud.com/intl/en-us/waf_faq/public_sys-resources/note_3.0-en-us.png)
Generally, the outbound traffic is larger than the inbound traffic.
What Happens If Website Traffic Exceeds the Service Bandwidth or Request Limit?
If your website normal traffic exceeds the service bandwidth or request limit offered by the edition you select, forwarding website traffic may be affected.
For example, traffic limiting and random packet loss may occur. Your website services may be unavailable, frozen, or respond very slowly.
In this case, upgrade your edition or buy additional QPS expansion packages.
About Purchase and Specifications Change FAQs
- Can I Buy Multiple WAF Instances Using the Same Account?
- What Are the Differences Between the Permissions of an Account and Those of IAM Users?
- Can I Share My WAF with Other Accounts?
- How Does WAF Calculate Domain Name Quota Usage?
- How Do I Change the WAF Instance Edition to a Lower One and Reduce Number of Packages?
- Can I Add More Protection Rules?
- What Can I Do If the Website Traffic Exceeds the WAF Service Request Limit?
- What Are the Impacts When QPS Exceeds the Allowed Peak Rate?
- Can I Change WAF Specifications During Renewal?
- How Many Rules Can I Add to a WAF Instance?
- Where and When Can I Buy a Domain, QPS, or Rule Expansion Package?
- How Do I Select Service QPS When Purchasing WAF?
- Is Service QPS Calculated Based on Incoming Traffic or Outgoing Traffic?
- Does WAF Have a Limit on the Protection Bandwidth or Shared Bandwidth?
- Where Can I View the Inbound and Outbound Bandwidths of a Protected Website?
Feedback
Was this page helpful?
Provide feedbackThank you very much for your feedback. We will continue working to improve the documentation.See the reply and handling status in My Cloud VOC.
For any further questions, feel free to contact us through the chatbot.
Chatbotmore