The build cache process is explained fairly thoroughly in the Best practices for writing Dockerfiles: Leverage build cache section. Starting with a parent image that is already in the cache, the next instruction is compared against all child images derived from that base image to see if one of them was built using the exact … Read more
Let’s consider a constant stream of cache requests with a cache capacity of 3, see below: A, B, C, A, A, A, A, A, A, A, A, A, A, A, B, C, D If we just consider a Least Recently Used (LRU) cache with a HashMap + doubly linked list implementation with O(1) eviction time … Read more
Update (October 20, 2022) You can now manage caches via the UI: https://github.com/<OWNER>/<REPO>/actions/caches Update (June 27, 2022) You can now manage caches via the GitHub Actions Cache API: GET list of caches for a repository: $ curl \ -H “Accept: application/vnd.github.v3+json” \ -H “Authorization: token <TOKEN>” \ https://api.github.com/repos/OWNER/REPO/actions/caches DELETE cache for a repository using a … Read more
A TLB (Translation Lookaside Buffer) is a cache of the translations from virtual memory addresses to physical memory addresses. When a processor changes the virtual-to-physical mapping of an address, it needs to tell the other processors to invalidate that mapping in their caches. That process is called a “TLB shootdown”.
RFC 7234 details what browsers and proxies should do by default: Although caching is an entirely OPTIONAL feature of HTTP, it can be assumed that reusing a cached response is desirable and that such reuse is the default behavior when no requirement or local configuration prevents it. Therefore, HTTP cache requirements are focused on preventing … Read more
The main reason I see today as an use-case for memcached over Redis is the superior memory efficiency you should be able to get with plain HTML fragments caching (or similar applications). If you need to store different fields of your objects in different memcached keys, then Redis hashes are going to be more memory … Read more
Cache-Lines size is (typically) 64 bytes. Moreover, take a look at this very interesting article about processors caches: Gallery of Processor Cache Effects You will find the following chapters: Memory accesses and performance Impact of cache lines L1 and L2 cache sizes Instruction-level parallelism Cache associativity False cache line sharing Hardware complexities
I had the same issue when upgrading from Tomcat 7 to 8: a continuous large flood of log warnings about cache. 1. Short Answer Add this within the Context xml element of your $CATALINA_BASE/conf/context.xml: <!– The default value is 10240 kbytes, even when not added to context.xml. So increase it high enough, until the problem … Read more
I have faced same problem. I had to supply ‘public’ headers my cdn. By default when gateway caching is enabled in prod mode, it returns 200 OK with private, nocache must validate headers. I solved problem this way. In app.php, before I send response to user ($respond->send), I have overwritten the cache control header to … Read more