--- name: "memcached_return_t" section: "3" platform: "linux" package: "libmemcached-awesome" version: "1.1.4-4" release: "Arch Linux 2026-11-01" platforms: ["linux"] url: "https://new.carta.tech/memcached_return_t" --- # memcached\_return\_t(3) Return type values ## NAME memcached\_return\_t - Return type values ## SYNOPSIS - **#include \** Compile and link with -lmemcached - **bool memcached\_success(memcached\_return\_t rc)** - **bool memcached\_continue(memcached\_return\_t rc)** - **bool memcached\_failed(memcached\_return\_t rc)** - **bool memcached\_fatal(memcached\_return\_t rc)** - **typedef enum memcached\_return\_t memcached\_return\_t** - **enum memcached\_return\_t** - **enumerator MEMCACHED\_AUTH\_CONTINUE** Authentication has been paused. - **enumerator MEMCACHED\_AUTH\_FAILURE** The credentials provided are not valid for this server. - **enumerator MEMCACHED\_AUTH\_PROBLEM** An unknown issue has occurred during authentication. - **enumerator MEMCACHED\_BAD\_KEY\_PROVIDED** The key provided is not a valid key. - **enumerator MEMCACHED\_BUFFERED** The request has been buffered. - **enumerator MEMCACHED\_CLIENT\_ERROR** An unknown client error has occurred internally. - **enumerator MEMCACHED\_CONNECTION\_BIND\_FAILURE** Deprecated since version \<0.30. We were not able to bind() to the socket. - **enumerator MEMCACHED\_CONNECTION\_FAILURE** A unknown error has occurred while trying to connect to a server. - **enumerator MEMCACHED\_CONNECTION\_SOCKET\_CREATE\_FAILURE** Deprecated since version \<0.30. An error has occurred while trying to connect to a server. It is likely that either the number of file descriptors need to be increased or you are out of memory. - **enumerator MEMCACHED\_DATA\_DOES\_NOT\_EXIST** The data requested with the key given was not found. - **enumerator MEMCACHED\_DATA\_EXISTS** The data requested with the key given was not found. - **enumerator MEMCACHED\_DELETED** The object requested by the key has been deleted. - **enumerator MEMCACHED\_DEPRECATED** The method that was requested has been deprecated. - **enumerator MEMCACHED\_E2BIG** Item is too large for the server to store. - **enumerator MEMCACHED\_END** The server has completed returning all of the objects requested. - **enumerator MEMCACHED\_ERRNO** An error has occurred in the driver which has set errno. - **enumerator MEMCACHED\_FAIL\_UNIX\_SOCKET** A connection was not established with the server via a unix domain socket. - **enumerator MEMCACHED\_FAILURE** Deprecated since version \<0.30. A unknown failure has occurred in the server. - **enumerator MEMCACHED\_FETCH\_NOTFINISHED** A request has been made, but the server has not finished the fetch of the last request. - **enumerator MEMCACHED\_HOST\_LOOKUP\_FAILURE** A DNS failure has occurred. - **enumerator MEMCACHED\_INVALID\_ARGUMENTS** The arguments supplied to the given function were not valid. - **enumerator MEMCACHED\_INVALID\_HOST\_PROTOCOL** The server you are connecting too has an invalid protocol. Most likely you are connecting to an older server that does not speak the binary protocol. - **enumerator MEMCACHED\_ITEM** An item has been fetched (this is an internal error only). - **enumerator MEMCACHED\_KEY\_TOO\_BIG** The key that has been provided is too large for the given server. - **enumerator MEMCACHED\_MAXIMUM\_RETURN** This in an internal only state. - **enumerator MEMCACHED\_MEMORY\_ALLOCATION\_FAILURE** An error has occurred while trying to allocate memory. - **enumerator MEMCACHED\_NO\_KEY\_PROVIDED** Deprecated since version \<0.30: Use **MEMCACHED\_BAD\_KEY\_PROVIDED** instead. No key was provided. - **enumerator MEMCACHED\_NO\_SERVERS** No servers have been added to the memcached\_st object. - **enumerator MEMCACHED\_NOTFOUND** The object requested was not found. - **enumerator MEMCACHED\_NOTSTORED** The request to store an object failed. - **enumerator MEMCACHED\_NOT\_SUPPORTED** The given method is not supported in the server. - **enumerator MEMCACHED\_PARSE\_ERROR** An error has occurred while trying to parse the configuration string. You should use memparse to determine what the error was. - **enumerator MEMCACHED\_PARSE\_USER\_ERROR** An error has occurred in parsing the configuration string. - **enumerator MEMCACHED\_PARTIAL\_READ** The read was only partially successful. - **enumerator MEMCACHED\_PROTOCOL\_ERROR** An unknown error has occurred in the protocol. - **enumerator MEMCACHED\_READ\_FAILURE** A read failure has occurred. - **enumerator MEMCACHED\_SERVER\_ERROR** An unknown error has occurred in the server. - **enumerator MEMCACHED\_SERVER\_MARKED\_DEAD** The requested server has been marked dead. - **enumerator MEMCACHED\_SOME\_ERRORS** A multi request has been made, and some undetermined number of errors have occurred. - **enumerator MEMCACHED\_STAT** A "stat" command has been returned in the protocol. - **enumerator MEMCACHED\_STORED** The requested object has been successfully stored on the server. - **enumerator MEMCACHED\_SUCCESS** The request was successfully executed. - **enumerator MEMCACHED\_TIMEOUT** Operation has timed out. - **enumerator MEMCACHED\_UNKNOWN\_READ\_FAILURE** An unknown read failure only occurs when either there is a bug in the server, or in rare cases where an ethernet nic is reporting dubious information. - **enumerator MEMCACHED\_UNKNOWN\_STAT\_KEY** The server you are communicating with has a stat key which has not be defined in the protocol. - **enumerator MEMCACHED\_VALUE** A value has been returned from the server (this is an internal condition only). - **enumerator MEMCACHED\_WRITE\_FAILURE** An error has occurred while trying to write to a server. ## SEE ALSO **[memcached(1)](/memcached/1.md) \** **[libmemcached(3)](/libmemcached/3.md) \** **[memcached\_strerror(3)](/memcached_strerror/3.md) \**