TL;DR Why do so many websites use the “query string” method, instead of just letting the last-modified header do its work? Changing the query string changes the url, ensuring content is “fresh”. Should I unset the Last-modified header and just work with query strings? No. Though that’s almost the right answer. There are three basic … Read more
On my system, an Intel Xeon X5570 @ 2.93 GHz I was able to get perf stat to report cache references and misses by requesting those events explicitly like this perf stat -B -e cache-references,cache-misses,cycles,instructions,branches,faults,migrations sleep 5 Performance counter stats for ‘sleep 5’: 10573 cache-references 1949 cache-misses # 18.434 % of all cache refs 1077328 … Read more
Static variables retain their assigned values over repeated calls to the function. They’re basically like global values that are only “visible” to that function. The initializer statement is only executed once however. This code initializes dateFormatter to nil the first time the function is used. On every subsequent call to the function a check is … Read more
Using meta HTML tags, Disable browser caching:- <meta http-equiv=”cache-control” content=”no-cache, must-revalidate, post-check=0, pre-check=0″> <meta http-equiv=”expires” content=”0″> <meta http-equiv=”pragma” content=”no-cache”> or, Add headers in http request as:- headers = new Headers({ ‘Cache-Control’: ‘no-cache, no-store, must-revalidate, post- check=0, pre-check=0’, ‘Pragma’: ‘no-cache’, ‘Expires’: ‘0’ });
Instead of rake tmp:cache:clear run the following command in console Rails.cache.clear This will clear the cache from whatever cache store you are using config.cache_store = :file_store # or config.cache_store = :mem_cache_store
There is no way I know of to manually clear this iOS managed cache. In general, this is a red herring. When the os manages something for you, you don’t need to worry about it. As long as you are correctly releasing anything you alloc/retain and handling memory warnings appropriately you’re doing your part.
You may be able to leverage axioms about small world networks to optimize this type of traversal. Small world networks are characterized by “hubs” the represent very dense interconnections of other nodes. Most nodes in the network will generally either connect within a few hops to a topologically nearby node (1-4 hops away) or will … Read more
There is no terminating condition in your loop so it’s going to run forever and cause the memory issue you mentioned. You should add a relevant break condition in your loop and test if it resolves the issue. def loop_bucket_gets bucket = Couchbase::Bucket.new({:node_list => [‘xxx.xxx.xxx.xxx:8091’, ‘yyy.yyy.yyy.yyy:8091’], :bucket => ‘Foo’, :pool => ‘default’, :expires_in => 1.day, … Read more