WebJul 14, 2024 · Since caching is one of the primary services a CDN provides, one of the most common metrics for evaluating CDN performance is cache hit ratio (CHR). CDN customers have used it for years as a... WebA do-not-cache directive is often enforced through the use of HTTP headers. Some headers that will cause your requests to NOT to be cached on Fastly include: 1.Cache-Control: :private. 2.Set-Cookie - pass without caching. However, setting Cache-Control: :max-age = 0 :s-maxage = 0. is NOT like a ‘pass’ in the traditional sense.
Request collapsing Fastly Developer Hub
WebNov 28, 2024 · Fastly only caches 200, 203, 300, 301, 302, 410 and 404s. You can change this behaviour in custom VCL, but it’s worth knowing what the defaults are. I was trying to serve 204 No Content responses... WebApr 15, 2024 · To calculate a hit ratio, divide the number of cache hits with the sum of the number of cache hits, and the number of cache misses. For example, if you have 51 cache hits and three misses over a period of … solyd warmtepomp
Cache Miss and Hit - A Beginner’s Guide to Caching - Hostinger Tutorials
WebJun 17, 2024 · Your cache hit ratio (CHR) will appear lower than it actually is because only outer requests are used in the calculation. For example, if there is a request for the first 100 MB of a resource but Fastly only has 99 MB of 100 MB in cache, the entire request will be counted as a miss in the CHR stat. WebFeb 28, 2024 · If it cannot store frequently accessed data in cache, SQL Server must retrieve the data from disk. If query performance can be improved by adding more memory, or by making more memory available to the data cache or SQL Server internal structures. How often SQL Server needs to read data from disk. WebFeb 9, 2024 · Now, if you have already done that and hit ratio is still relatively low, this probably means that the size of your tables in disk are much bigger than your total amount of memory. If this is the case adding more RAM to the server will significantly increase hits & performance. More RAM => more cache => more hits => higher hit ratio. solyet68 hotmail.com