摘要：【中文】本发明公开了企业级高性能API服务网关设计方法，方法的内容包括：开始、入站请求、计算限流计数KEY，当前rate、是否超过rate限制、放行请求，计数器增加、同步计数器增量、拒绝请求，返回HTTP429状态码、结束。在此设计方法中设有同步计数器增量，通过配置计数器同步间隔时间，令其小于限流窗口时间，使得在限流窗口时间内，API网关集群整体的限流速率在“收敛‑发散‑收敛”状态循环，尽量贴近所需限流速率；本方法在保证限流准确的同时降低了对API服务网关整体性能的影响，满足企业级应用的需要；实现了高效、可扩展、最终一致的分布式限流；API服务网关节点状态无关的分布式限流，可以动态增减集群节点数量、修改限流配置，灵活应对不同精度的限流需要。 【EN】The invention discloses a method for designing an enterprise-level high-performance API service gateway, which comprises the following steps: starting, inbound requesting, calculating the current rate, calculating the current limit count KEY, whether the current rate exceeds the rate limit, releasing the request, increasing the counter, increasing the synchronous counter, refusing the request, returning the HTTP429 status code, and ending. In the design method, the increment of a synchronous counter is set, and the synchronous interval time of the counter is configured to be smaller than the time of a current limiting window, so that the current limiting rate of the whole API gateway cluster circulates in a state of convergence-divergence-convergence within the time of the current limiting window, and is close to the required current limiting rate as much as possible; the method reduces the influence on the overall performance of the API service gateway while ensuring the accuracy of current limiting, and meets the requirements of enterprise-level application; the efficient, expandable and finally consistent distributed current limiting is realized; distributed current limiting irrelevant to the states of the API service gateway nodes can dynamically increase and decrease the number of cluster nodes and modify current limiting configuration, and current limiting requirements with different precisions can be flexibly met.