memcached

问题 My website is movies catalog. Once user log in, I show him/her the latest movie added to my database: movies = Movies.query() movies = movies.order(-Movies.added) movie = movies.get(keys_only = True) // get_latest_movie_id Is it cached (movies are added to the database weekly, so it should be cached)? How to verify that (i.e. what is memcache key)? Yesterday about 1000 users visited my site and I've got OverQuotaError: The API call datastore_v3.RunQuery() required more quota than is available

问题 I am trying to run simple code of cache using memcache in my laravel project. I have added CACHE_DRIVER=memcached in my .env file. I have created folder of memcache in C drive and added a file memcache.exe in that, and run in cmd by opening it as administrator. my code in route is: Route::get('/', function () { // return view('welcome'); Cache::put('k1','created memcached memory!!',1); Cache::add('k2','used "add" in memcached!!',2); Cache::forever('k3','using forever to create cache',3); $k1

问题 I'm trying to manually set an object in the Django cache API but it fails (i think due to pickling?) The object is given to me by a third party, my code is: def index(request, template_name="mytemplate.htm"): user_list = cache.get("user_list_ds") if user_list is None: # this is the expensive bit I'm trying to cache # given to me by a third part user_list = graffiti.user_list("top", 100).responseObj().blocks() cache.set("user_list_ds", user_list, 10*60) # 10 minutes return render_to_response

问题 I'm using Ruby on Rails and dalli gem to do caching with memcache. The default value (value as in key-value store, aka slab) max size is 1MB. I would like to increase this to 2MB. The documentation of dalli says: value_max_bytes: The maximum size of a value in memcached. Defaults to 1MB, this can be increased with memcached's -I parameter. You must also configure Dalli to allow the larger size here. With the -I option of memcached , how do I specify 2MB? Is it -I2 or -I2000? (the

问题 Is it possible to grab a list of memcached key based on some regex? I understand that one solution is to store the key in the database and grab the list when I need to delete those keys. This means that, it is going to incur additional cost to the db. I was wondering if there is another way to do it without DB overhead. Cheers, Mickey 回答1: No, there's no way to do that. The documentation suggests a way to simulate a namespace, but that's it. 回答2: memcached is fast because it doesn't do this

问题 I know that redis will expire the keys on its own, freeing the memory and was wondering if memcached would behave the same. Let's say I have a kind of cache keys that are expired very rarely (we'll call them A), and another kind that expires every 5 minutes, using Ruby on Rails' expires_in: 5.minutes (we'll call them B) Will memcached drop the A keys if there are too many B keys ? For instance if I can store 5 values in my store, a scenario could be: Store A1 (4 values left) Store B1 (3

问题 I am attempting to generate a fragment cache (using a Dalli/Memcached store) however the key is being generated with "#" as part of the key, so Rails doesn't seem to be recognizing that there is a cache value and is hitting the database. My cache key in the view looks like this: cache([@jobs, "index"]) do The controller has: @jobs = @current_tenant.active_jobs With the actual Active Record query like this: def active_jobs self.jobs.where("published = ? and expiration_date >= ?", true, Date

问题 On doing gem install memcached following error gets thrown. .... .... checking for pod2man... /usr/bin/pod2man ./configure: line 22468: syntax error near unexpected token `sasl,,' ./configure: line 22468: ` AC_LIB_HAVE_LINKFLAGS(sasl,,' make: *** [config.status] Error 2 *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. I have already install

问题 I've got a memcached instance running on a machine to take the stress of the database. Currently there are about 350 requests per second via PHP, which should be perfectly doable according to the memcached docs, but I'm seeing ridiculously slow get() times. Averaging around 60 ms, with spikes in both ways (0.1 ms and 250 ms). The memcached process is also using around 80% CPU all the time. It's getting really problematic as with all the gets combined it takes over 5 seconds for the page to

问题 I would like to turn caching off for certain pages when that view is accessed. It's for a page that simply queries model objects. it seems like when 'django.middleware.cache.FetchFromCacheMiddleware', is enabled, it requires another "refresh" from the browser to see the latest data. Is there any way to prevent this? Thank you. 回答1: https://docs.djangoproject.com/en/dev/topics/cache/#controlling-cache-using-other-headers If you want to use headers to disable caching altogether, django.views