memcached

问题 I am new to memcached but I do need to fix this error quick on the website I don't know where to cut in? Anything that I can do to find out which node or key memcached failed to get? Any log files can I look into? 回答1: This occurs when you store an object which has references to recources such as file descriptors or database connections. It can also occur if the object you get is of a class which isn't loaded when you get it from memcached. To find out which memcached key fails, you could set

问题 As it is seen that the Spymemcache client use TCP connection to connect with Memcached server as default. I want to use UDP instead of TCP. I think Facebook use UDP to get() requests from Memcached. Any one know how to use UDP with SpyMemcache ? 来源： https://stackoverflow.com/questions/24103977/how-spymemcache-client-use-udp

问题 On an ubuntu server, I have a drupal site which uses nginx+fastcgi as webserver and uses xcache. I am quite happy with the configuration but trying to set up memcache hoping to boost the site's speed, but I am not sure how to do so. After installing memcached, i added extension=memcache.so to /etc/php5/cgi/php.ini and I see that memcache process is running. However, after a few hours, instead of better performance I just see higher server load (average 5 instead of usual 2). So I appreciate

问题 I have a rails application hosted on Heroku using a custom Domain. The application displays the latest Tweet by a single user at the top of each page. To avoid hitting Twitter rate limits (150 requests p/h) I have the application cache the search result in memcache (Dalli) with a 5 minute expiration. This works nicely, ensuring the application only ever makes 12 requests per hour. If it was highly trafficked this solution might be problematic, but as it is I think its fine. Despite the fact I

问题 Does memcached guarantee persistent IN-MEMORY storage of objects for as long as it is running and the available configured memory space enough ? An example is storage of session data for messaging systems. Under what circumstances will i try to read a key from memcached ( which i wrote in earlier, with no timeouts for the data against that key) and get an empty response ? what is the behavior of memcached when configured memory is exceeded (will it swap out some data, and which data will it

问题 My rails 3.2 app is trying to fetch values from the cache (memcached via dalli) that I'm not expecting it to be caching. It's not getting any cache hits, but I'm puzzled about what is going on. This happens with config.action_controller.perform_caching = true on production as well as development, using WEBrick. Here's a snippet of what I'm seeing in memcache verbose output: <30 GET https://www.myrailsapp.com/? >30 Writing an error: Not found >30 Writing bin response: >30 0x81 0x00 0x00 0x00

问题 The put(...) method of GAE's memcahe API accepts as an argument (in one of it's overloaded implementations) a SetPolicy argument. In the Javadocs here it sais that if you chose "ADD_ONLY_IF_NOT_PRESENT" as policy it's, and I quote: "useful to avoid race conditions." My questions are: what happends with an expired value that was set with the same key? If I add to memcache something like (key=1, value=whatever), then this entry expires, and then I try to add (key=1, value=whatever2) using ADD

问题 The error: Could not load file or assembly 'Enyim.Caching, Version=1.0.0.0, Culture=neutral, PublicKeyToken=cec98615db04012e' or one of its dependencies This is on server 2008, I tried disabling the strong name validation, but the instructions are totally wrong for server, and I dont' really trust this anyhow, how will I get it to work on the prod server. Wild frustrating.. The server is up and happily running, but I can't get any memcache client to actually work.. I assume someone, somewhere

问题 On my web site i've made data caching with memcached. It stores fully generated html pages. Next step was to get this data from memcached by nginx and send back to user w\o starting apache process. First i tried to get data from cache by php backend and it worked. But when i try make this with nginx - i see hardly corrupted data. smth like i'm asking for help with this problem. p.s. here the part of nginx config if it can help location / { #add_header Content-Type "text/html"; set $cachable 1

问题 Given function f1 which receives n String arguments, what would be considered better ,in terms of runtime performance, random key generation strategy for memcache? Our Memcache client does internal md5sum hashing on the keys it gets: public class MemcacheClient { public Object get(String key) { String md5 = Md5sum.md5(key) // Talk to memcached to get the Serialization... return memcached(md5); } } My usage scenarios are: First option public static String f1(String s1, String s2, String s3,