What Is Cache Hit Ratio? Cache Hit Ratio (CHR) is a key performance metric used to evaluate the effectiveness of a caching system. In simple terms, it represents the proportion of requests successfully served from the cache rather than being fetched from the original source or backend server....
What is a cache hit ratio? Cache hit ratio is a measurement of how many content requests a cache is able to fill successfully, compared to how many requests it receives. A content delivery network (CDN) provides a type of cache, and a high-performing CDN will have a high cache hit rat...
Static CDN cache,CDN:When Alibaba Cloud CDN accelerates the delivery of static resources to a user, Alibaba Cloud CDN retrieves the resources from the origin server and caches the resources on the point of presence (POP) ...
When a cache client attempts to access data, it first checks the cache. If the data is found there, that is referred to as acache hit. The percent of attempts that result in a cache hit is called thecache hit rateor ratio. Requested data that isn't found in the cache -- referred t...
An I/O intensive application using mmap or read/write cannot guess what its cache hit rate will be. Therefore it has to run a large number of threads (significantly larger than the core count of the machine it is running on). Using too few threads, they may all be waiting for the dis...
What eviction policy will you have? Have you fully understood the access patterns the cache will need to support? What hit rate do you expect? Do you have telemetry to know whether your cache is operating correctly in production? Follow me attwitter.com/tfsbuck...
“What cache hit rate is good for optimal MySQL Performance” is typical question I’m asked. It could by MyISAM key_buffer or Innodb innodb_buffer_pool it does not really matter. In both cases trying to come up with constant “good” hit rate is looking for trouble. Well of course yo...
Improving the Cache Hit Ratio You can select an optimization policy based on the cause of the low cache hit ratio to improve the cache hit ratio. Learn More Obtaining Real IP Addresses of Users You can obtain real IP addresses of users on different types of web servers (including Tomcat, ...
This optimization is called stack packing and it’s supported by Visual C++. Stack packing reduces the size of the stack frame and may improve the data cache hit ratio, resulting in better performance. Unfortunately, things are not that simple. From a theoretical perspective, (near) optimal ...
L1 cache, or primary cache, is extremely fast but relatively small, and is usually embedded in the processor chip as CPU cache. L2 cache, or secondary cache, is often more capacious than L1. L2 cache may be embedded on the CPU, or it can be on a separate chip or coprocessor and have...