caching

问题 When answering this question (and having read this answer to a similar question), I thought that I knew how Python caches regexes. But then I thought I'd test it, comparing two scenarios: a single compilation of a simple regex, then 10 applications of that compiled regex. 10 applications of an uncompiled regex (where I would have expected slightly worse performance because the regex would have to be compiled once, then cached, and then looked up in the cache 9 times). However, the results

问题 Is it possible to disable all the cache features from AFNetworking? I am building my own custom cache system and don't want this to take up disk space too. Thanks, Ashley 回答1: Cacheing is handled application-wide by NSURLCache . If you don't set a shared cache, requests are not cached. Even with a shared NSURLCache , the default implementation on iOS does not support disk cacheing anyway. That said, unless you have a very particular reason to write your own cacheing system, I would strongly

问题 I'm using picasso library to load images for my app. But I don't how to implement my own disk (sdcard) caching with picasso library. 回答1: Picasso uses the HTTP client for disk caching and if one is already configured it will use that instead of installing its own. For the built-in UrlConnection the docs for installing a cache are here: https://developer.android.com/reference/android/net/http/HttpResponseCache.html If you are using OkHttp then you just call setCache: http://square.github.io

问题 I am playing around with Game of thrones Api - https://anapioficeandfire.com/Documentation. The documentation mentions they are implementing rate limiting. Hence implementing cache is important. Let's say I want to print all the names of the houses from the Api on a button click function getAllHouseNames() { for (let i = 1; i <= 45; i++) { getHouseNames(i) } } async function getHouseNames(page) { var req = new XMLHttpRequest(); req.onreadystatechange = await function() { if (this.readyState =

问题 This is about some code I inherited; the intent is clear, but (at least in Firefox and Chrome) it is not behaving as intended. The idea is clearly to build a PNG based on client-side data and to cache it unless and until that data changes. The intent presumably is that the state of the PNG is preserved regardless of whether or not the client is using cookies, local storage, etc., but at the same time the server does not preserve data about this client. Client-side JavaScript: function read_or

问题 I've been trying to understand how to use the LruCache to combat the problem of outOfMemory errors in the lower APIs however I've been having trouble implementing it correctly. For some reason when I try to put a Drawable and url string in cache as an identifier the system throws a nullpointerexception: Key == null || value == null error which is a new kind of error to me. I have searched around the internet but it seems no one else has had this kind of error. Any Ideas on what is going wrong

问题 I searched all over and found a method to cache images on Amazon S3. Whenever I upload an image, I add a meta element of cache-control and then set max-age=86400 . However, on any sort of speed test site it says that my images do not have a cache applied to them. I am not sure if it matters, but I have CloudFront linked to this S3 bucket. Sorry, but completely new to AWS. Anyone know why my images may not be caching? 回答1: on any sort of speed test site it says that my images do not have a

问题 Laravel Cache::remember is returning a LengthAwarePaginator object as an array. function getNotifications( $userID ) { $values = Cache::remember('cache-key', 10, function() { $query = DB::table( 'user_notifications' ) ->leftJoin( 'notifications', 'user_notifications.notification_id', '=', 'notifications.id' ) ->where( 'user_notifications.user_id', $userID ) ->select( 'notifications.*' ) ->orderBy('created_at', 'DESC') ->paginate(5); return $query; }); return $values; } If I dd($query) before

问题 I have a website, say example.com. Couldflare is set to cache everything on *example.com/* If I add another rule: *nope.example.com/* And set it to bypass cache, what will cloudflare do with the conflicting page rules? 回答1: According to Source A; Page Rules are applied in the order that they are listed. So, all you would have to do is put the bypass cache first and then the cache everything rule: *nope.example.com/* (Bypass) *example.com/* (Cache Everything) 来源： https://stackoverflow.com

问题 I have 2 CD servers using Sitecore 7.5 that have the actual Sitecore interfaces turned off. Is there any way for me to clear the caches on the 2 CD servers? I know that there is probably a way I could write code to do it, but I would be surprised that there is no way to do it out of the box. Thanks, Corey 回答1: As @Marek mentioned, you have to have your html cache clearing specified for your site in the web.config. Since you're trying to clear the cache on the CD servers, you have to have this