<h1><aname="Redis Command Reference">Redis Command Reference</a></h1>Every command name links to a specific wiki page describing the behavior of the command.<h2><aname="Connection handling">Connection handling</a></h2><ul><li><ahref="QuitCommand.html">QUIT</a><codename="code"class="python">close the connection</code></li><li><ahref="AuthCommand.html">AUTH</a><codename="code"class="python">simple password authentication if enabled</code></li></ul>
<h2><aname="Commands operating on string values">Commands operating on string values</a></h2><ul><li><ahref="SetCommand.html">SET</a><i>key</i><i>value</i><codename="code"class="python">set a key to a string value</code></li><li><ahref="GetCommand.html">GET</a><i>key</i><codename="code"class="python">return the string value of the key</code></li><li><ahref="GetsetCommand.html">GETSET</a><i>key</i><i>value</i><codename="code"class="python">set a key to a string returning the old value of the key</code></li><li><ahref="MgetCommand.html">MGET</a><i>key1</i><i>key2</i> ... <i>keyN</i><codename="code"class="python">multi-get, return the strings values of the keys</code></li><li><ahref="SetnxCommand.html">SETNX</a><i>key</i><i>value</i><codename="code"class="python">set a key to a string value if the key does not exist</code></li><li><ahref="IncrCommand.html">INCR</a><i>key</i><codename="code"class="python">increment the integer value of key</code></li><li><ahref="IncrCommand.html">INCRBY</a><i>key</i><i>integer</i><codename="code"class="python"> increment the integer value of key by integer</code></li><li><ahref="IncrCommand.html">DECR</a><i>key</i><codename="code"class="python">decrement the integer value of key</code></li><li><ahref="IncrCommand.html">DECRBY</a><i>key</i><i>integer</i><codename="code"class="python">decrement the integer value of key by integer</code></li><li><ahref="ExistsCommand.html">EXISTS</a><i>key</i><codename="code"class="python">test if a key exists</code></li><li><ahref="DelCommand.html">DEL</a><i>key</i><codename="code"class="python">delete a key</code></li><li><ahref="TypeCommand.html">TYPE</a><i>key</i><codename="code"class="python">return the type of the value stored at key</code></li></ul>
<h2><aname="Commands operating on the key space">Commands operating on the key space</a></h2><ul><li><ahref="KeysCommand.html">KEYS</a><i>pattern</i><codename="code"class="python">return all the keys matching a given pattern</code></li><li><ahref="RandomkeyCommand.html">RANDOMKEY</a><codename="code"class="python">return a random key from the key space</code></li><li><ahref="RenameCommand.html">RENAME</a><i>oldname</i><i>newname</i><codename="code"class="python">rename the old key in the new one, destroing the newname key if it already exists</code></li><li><ahref="RenamenxCommand.html">RENAMENX</a><i>oldname</i><i>newname</i><codename="code"class="python">rename the old key in the new one, if the newname key does not already exist</code></li><li><ahref="DbsizeCommand.html">DBSIZE</a><codename="code"class="python">return the number of keys in the current db</code></li><li><ahref="ExpireCommand.html">EXPIRE</a><codename="code"class="python">set a time to live in seconds on a key</code></li></ul>
<h2><aname="Commands operating on the key space">Commands operating on the key space</a></h2><ul><li><ahref="KeysCommand.html">KEYS</a><i>pattern</i><codename="code"class="python">return all the keys matching a given pattern</code></li><li><ahref="RandomkeyCommand.html">RANDOMKEY</a><codename="code"class="python">return a random key from the key space</code></li><li><ahref="RenameCommand.html">RENAME</a><i>oldname</i><i>newname</i><codename="code"class="python">rename the old key in the new one, destroing the newname key if it already exists</code></li><li><ahref="RenamenxCommand.html">RENAMENX</a><i>oldname</i><i>newname</i><codename="code"class="python">rename the old key in the new one, if the newname key does not already exist</code></li><li><ahref="DbsizeCommand.html">DBSIZE</a><codename="code"class="python">return the number of keys in the current db</code></li><li><ahref="ExpireCommand.html">EXPIRE</a><codename="code"class="python">set a time to live in seconds on a key</code></li><li><ahref="TtlCommand.html">TTL</a><codename="code"class="python">get the time to live in seconds of a key</code></li></ul>
<h2><aname="Commands operating on lists">Commands operating on lists</a></h2><ul><li><ahref="RpushCommand.html">RPUSH</a><i>key</i><i>value</i><codename="code"class="python">Append an element to the tail of the List value at key</code></li><li><ahref="RpushCommand.html">LPUSH</a><i>key</i><i>value</i><codename="code"class="python">Append an element to the head of the List value at key</code></li><li><ahref="LlenCommand.html">LLEN</a><i>key</i><codename="code"class="python">Return the length of the List value at key</code></li><li><ahref="LrangeCommand.html">LRANGE</a><i>key</i><i>start</i><i>end</i><codename="code"class="python">Return a range of elements from the List at key</code></li><li><ahref="LtrimCommand.html">LTRIM</a><i>key</i><i>start</i><i>end</i><codename="code"class="python">Trim the list at key to the specified range of elements</code></li><li><ahref="LindexCommand.html">LINDEX</a><i>key</i><i>index</i><codename="code"class="python">Return the element at index position from the List at key</code></li><li><ahref="LsetCommand.html">LSET</a><i>key</i><i>index</i><i>value</i><codename="code"class="python">Set a new value as the element at index position of the List at key</code></li><li><ahref="LremCommand.html">LREM</a><i>key</i><i>count</i><i>value</i><codename="code"class="python">Remove the first-N, last-N, or all the elements matching value from the List at key</code></li><li><ahref="LpopCommand.html">LPOP</a><i>key</i><codename="code"class="python">Return and remove (atomically) the first element of the List at key</code></li><li><ahref="LpopCommand.html">RPOP</a><i>key</i><codename="code"class="python">Return and remove (atomically) the last element of the List at key</code></li></ul>
<h2><aname="Commands operating on sets">Commands operating on sets</a></h2><ul><li><ahref="SaddCommand.html">SADD</a><i>key</i><i>member</i><codename="code"class="python">Add the specified member to the Set value at key</code></li><li><ahref="SremCommand.html">SREM</a><i>key</i><i>member</i><codename="code"class="python">Remove the specified member from the Set value at key</code></li><li><ahref="SmoveCommand.html">SMOVE</a><i>srckey</i><i>dstkey</i><i>member</i><codename="code"class="python">Move the specified member from one Set to another atomically</code></li><li><ahref="ScardCommand.html">SCARD</a><i>key</i><codename="code"class="python">Return the number of elements (the cardinality) of the Set at key</code></li><li><ahref="SismemberCommand.html">SISMEMBER</a><i>key</i><i>member</i><codename="code"class="python">Test if the specified value is a member of the Set at key</code></li><li><ahref="SinterCommand.html">SINTER</a><i>key1</i><i>key2</i> ... <i>keyN</i><codename="code"class="python">Return the intersection between the Sets stored at key1, key2, ..., keyN</code></li><li><ahref="SinterstoreCommand.html">SINTERSTORE</a><i>dstkey</i><i>key1</i><i>key2</i> ... <i>keyN</i><codename="code"class="python">Compute the intersection between the Sets stored at key1, key2, ..., keyN, and store the resulting Set at dstkey</code></li><li><ahref="SunionCommand.html">SUNION</a><i>key1</i><i>key2</i> ... <i>keyN</i><codename="code"class="python">Return the union between the Sets stored at key1, key2, ..., keyN</code></li><li><ahref="SunionstoreCommand.html">SUNIONSTORE</a><i>dstkey</i><i>key1</i><i>key2</i> ... <i>keyN</i><codename="code"class="python">Compute the union between the Sets stored at key1, key2, ..., keyN, and store the resulting Set at dstkey</code></li><li><ahref="SdiffCommand.html">SDIFF</a><i>key1</i><i>key2</i> ... <i>keyN</i><codename="code"class="python">Return the difference between the Set stored at key1 and all the Sets key2, ..., keyN</code></li><li><ahref="SdiffstoreCommand.html">SDIFFSTORE</a><i>dstkey</i><i>key1</i><i>key2</i> ... <i>keyN</i><codename="code"class="python">Compute the difference between the Set key1 and all the Sets key2, ..., keyN, and store the resulting Set at dstkey</code></li><li><ahref="SmembersCommand.html">SMEMBERS</a><i>key</i><codename="code"class="python">Return all the members of the Set value at key</code></li></ul>
<h2><aname="Multiple databases handling commands">Multiple databases handling commands</a></h2><ul><li><ahref="SelectCommand.html">SELECT</a><i>index</i><codename="code"class="python">Select the DB having the specified index</code></li><li><ahref="MoveCommand.html">MOVE</a><i>key</i><i>dbindex</i><codename="code"class="python">Move the key from the currently selected DB to the DB having as index dbindex</code></li><li><ahref="FlushdbCommand.html">FLUSHDB</a><codename="code"class="python">Remove all the keys of the currently selected DB</code></li><li><ahref="FlushallCommand.html">FLUSHALL</a><codename="code"class="python">Remove all the keys from all the databases</code></li></ul>
<h1><aname="TTL _key_">TTL _key_</a></h1><blockquote>The TTL command returns the remaining time to live in seconds of a key that has an <ahref="ExpireCommand.html">EXPIRE</a> set. This introspection capability allows a Redis client to check how many seconds a given key will continue to be part of the dataset. If the Key does not exists or does not have an associated expire, -1 is returned.</blockquote>