X-Git-Url: https://git.m6w6.name/?a=blobdiff_plain;f=libmemcached%2Fmemcached_exist.html;h=82d480ba97ef801aba3ba9896c3ef9e4fbe0d295;hb=7a6ebf3a611e2e43aa496885f301c6826a49d25c;hp=617c232cff386a83c1261df8d8c086c01a1a4c76;hpb=3fc1f78f8a21346e8ddc81f5f97e49042cd3ac76;p=awesomized%2Flibmemcached diff --git a/libmemcached/memcached_exist.html b/libmemcached/memcached_exist.html index 617c232c..82d480ba 100644 --- a/libmemcached/memcached_exist.html +++ b/libmemcached/memcached_exist.html @@ -8,7 +8,7 @@ - Determine if a keys exists. — libmemcached 1.0.99 documentation + Determine if a keys exists — libmemcached 1.0.99 documentation @@ -21,10 +21,10 @@ - - - - + + + + @@ -36,8 +36,8 @@ - - + + @@ -85,474 +85,33 @@ -

Basics

-

Introducing the C Client Library for memcached
- SYNOPSIS
- DESCRIPTION
- CONSTANTS
- THREADS AND PROCESSES
- SEE ALSO
-
Versioning
Creating and destroying a memcached_st
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Examples
-
Configuring Libmemcached
- SYNOPSIS
- DESCRIPTION
- ENVIRONMENT
- RETURN
- EXAMPLE
- SEE ALSO
-
Retrieving errors
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-

-

Working with Data

-

Incrementing and Decrementing Values
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Deleting data from a server
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Determine if a keys exists.
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Flushing client buffers
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Wiping clean the contents of a server
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Retrieving data from the server
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Working with result sets
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Store, replace, add, or atomically add data to the server
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Appending or Prepending to data on the server
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Working with data on the server in an atomic fashion
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-

-

Advanced Topics

-

Set encryption key
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Modifying how the driver behaves
- SYNOPSIS
- DESCRIPTION
- RETURN
- NOTES
- SEE ALSO
-
Setting callbacks
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Dumping data from a server
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Generating hash values directly
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Use custom allocators for embedded usage
- SYNOPSIS
- DESCRIPTION
- NOTES
- RETURN
- SEE ALSO
-
Disconnecting a client from a server
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Error Codes (memcached_return_t)
- SYNOPSIS
- SEE ALSO
-
SASL support
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Managing lists of servers
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Manipulate the server information stored in memcached_st
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Converting Errors, memcached_return_t, to strings
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Client Error messages
-
Storing custom user information in the client.
- LIBRARY
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Setting the verbosity of a server
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Getting version information about the client and server
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
DEFAULTS

-

Interface Versions

-

libmemcached 1.0 API
- memcached_touch, memcached_touch_by_key
-
libmemcached 1.1 API

-

Deprecated Functions

-

memcached_fetch

-

Platform Specifics

-

Systemtap support
Required C types
- Types
- C Types Used
-

-

Deriving Statistics from a Server

-

Analyzing servers
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-
Working with statistical information from a server
- SYNOPSIS
- DESCRIPTION
- RETURN
- SEE ALSO
-

-

Libmemcachedutil

-

Introducing libmemcachedutil
- SYNOPSIS
- DESCRIPTION
- THREADS
- SEE ALSO
- Working with memcached pools
  - SYNOPSIS
  - DESCRIPTION
  - RETURN
  - SEE ALSO
  -
-
Client Applications
- memcapable - Checking a Memcached server capabilities and compatibility
  - SYNOPSIS
  - DESCRIPTION
  - LIMITATIONS
  - OPTIONS
  - SEE ALSO
  -
- memcat - âcatâ data from a server
  - SYNOPSIS
  - DESCRIPTION
  - OPTIONS
  - SEE ALSO
  -
- memcp - Copy data to a server
  - SYNOPSIS
  - DESCRIPTION
  - OPTIONS
  - SEE ALSO
  -
- memdump - Dumping your server
  - SYNOPSIS
  - DESCRIPTION
  - OPTIONS
  - SEE ALSO
  -
- memerror - translate an error code to a string
  - SYNOPSIS
  - DESCRIPTION
  - OPTIONS
  - SEE ALSO
  -
- memflush - flush all data from a server
  - SYNOPSIS
  - DESCRIPTION
  - OPTIONS
  - SEE ALSO
  -
- memrm - Remove data from a server
  - SYNOPSIS
  - DESCRIPTION
  - OPTIONS
  - SEE ALSO
  -
- memslap - Load testing and benchmarking a server
  - SYNOPSIS
  - DESCRIPTION
  - OPTIONS
  - SEE ALSO
  -
- memaslap - Load testing and benchmarking a server
  - SYNOPSIS
  - DESCRIPTION
  - FEATURES
  - DETAILS
  - USAGE
  - Configuration file
  - Format of output
  - OPTIONS
  - EXAMPLES
  - SEE ALSO
  -
- memstat - Gather statistics from a server
  - SYNOPSIS
  - DESCRIPTION
  - OPTIONS
  - SEE ALSO
  -
- memexist - Check for the existence of a key
  - SYNOPSIS
  - DESCRIPTION
  - OPTIONS
  - SEE ALSO
  -
- memparse - Parse an option string
  - SYNOPSIS
  - DESCRIPTION
  - OPTIONS
  - SEE ALSO
  -
- memping - Test to see if a server is available.
  - SYNOPSIS
  - DESCRIPTION
  - OPTIONS
  - SEE ALSO
  -
- memtouch - Touches a key.
  - SYNOPSIS
  - DESCRIPTION
  - OPTIONS
  - SEE ALSO
  -
-
Libhashkit
-
- Introducing libhashkit
  - DESCRIPTION
  - SEE ALSO
  -
- Creating a hashkit structure
  - SYNOPSIS
  - DESCRIPTION
  - RETURN VALUE
  - SEE ALSO
  -
- Available Hashes
  - SYNOPSIS
  - DESCRIPTION
  - RETURN VALUE
  - SEE ALSO
  -
- hashkit_value
  - SYNOPSIS
  - DESCRIPTION
  - RETURN VALUE
  - SEE ALSO
  -
- Change Logs
- Copyright
@@ -598,12 +157,20 @@
Docs »
Determine if a keys exists.
libmemcached API »
Working with Data »
Determine if a keys exists
+ + Edit on GitHub + +

-

Determine if a keys exists.Â¶

+

Determine if a keys existsÂ¶

-

SYNOPSISÂ¶

-

#include <libmemcached/memcached.h>

+

SYNOPSISÂ¶

+

#include <libmemcached/memcached.h>: Compile and link with -lmemcached

-memcached_return_t memcached_exist(memcached_stÂ *ptr, charÂ *key, size_tÂ *key_length)Â¶
+memcached_return_t memcached_exist(memcached_st *ptr, char *key, size_t *key_length)Â¶

-memcached_return_t memcached_exist_by_key(memcached_stÂ *ptr, charÂ *group_key, size_tÂ *group_key_length, charÂ *key, size_tÂ *key_length)Â¶

+

+memcached_return_t memcached_exist_by_key(memcached_st *ptr, char *group_key, size_t *group_key_length, char *key, size_t *key_length)Â¶

+

+++ + + + + + +

Parameters:	+ ptr -- pointer to an initialized `memcached_st` struct + group_key -- the key namespace + group_key_length -- length of the `group_key` without any terminating zero + key -- the key to check + key_length -- length of the `key` without any terminating zero + +
Returns:	`memcached_return_t` indicating success +

+

-

Compile and link with -lmemcached

-

New in version 0.53.

+

New in version 0.53.

DESCRIPTIONÂ¶

-

memcached_exist() can be used to check if a key exists.

+

memcached_exist() can be used to check if a key exists.

-

-

RETURNÂ¶

-

MEMCACHED_SUCCESS: The key exists.
-
MEMCACHED_NOTFOUND: The key was not found.
-

@@ -662,10 +253,10 @@