memcache replace



memcache::replace() est utilisé pour remplacer la valeur d'un élément identifié par la clé key . dans le cas où l'élément identifié par la clé key n'existe pas, la fonction memcache::replace() retournera false . pour le reste, la fonction memcache::replace() fonctionne de la même façon que la fonction memcache::set().

memcache replace

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memcache replace

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mai according to php.net: memcached::replace() is similar to memcached::set(), but the operation fails if the key does not exist on the server. description. bool memcache::replace ( string key, mixed var [, int flag [, int expire]] ). memcache::replace() should be used to replace value of existing item with key . in case if item with such key doesn't exists, memcache::replace() returns false. for the rest memcache::replace() behaves similarly to 

memcache replace

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memcached replace data learn memcached memory caching system in simple and easy steps starting from basic to advanced concepts with examples including overview, environment, connection, set data, add data, replace data, append and prepend data, cas command, get data, get cas data, delete key,  there are two subtle variations on setting a value: adding and replacing. when you add a value with a given key, the value is created in memcache only if the key is not already set. if the key is set, adding the value will do nothing. this opera‐tion is atomic, so you can use the add operation to avoid a race condition between 

memcache replace

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memcache replace

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when using memcache from php, you can save values with either set or replace. you can probably safely ignore the replace method: “memcached::replace() is similar to memcached::set(), but the operation fails if the key does not exist on the server.” php documentation  memcache::replace() should be used to replace value of existing item with key . in case if item with such key doesn't exists, memcache::replace() returns false. for the rest memcache::replace() behaves similarly to memcache::set(). also you can use memcache_replace() function.

memcache replace

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description. bool memcache::replace ( string key, mixed var [, int flag [, int expire]]). memcache::replace() should be used to replace value of existing item with key . in case if item with such key doesn't exists, memcache::replace() returns false. for the rest memcache::replace() behaves similarly to memcache::set(). you've pretty much got the answer to your first question already: the intent of add is to only work when a key doesn't already exist, while set is there to update the value, regardless of whether it already exists. if you're familiar with sql, it's (roughly) like the difference between insert queries ( add ) and 

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replace. basic case. replace sets a new value for a key if and only if that key already exists client .replace('firstname', 'victor') .then(function() { console.log('successfully replaced the value for the key firstname'); });. error if key does not already exist. if a key does not already exist and you try to use the replace command, 

memcache replace

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memcache replace

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memcache replace

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