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ruanhaishen
redis
Commits
7501c66f
Commit
7501c66f
authored
Nov 22, 2011
by
antirez
Browse files
comment describing the Redis command table enhanced
parent
afd0f06b
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1
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src/redis.c
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7501c66f
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@@ -70,9 +70,31 @@ double R_Zero, R_PosInf, R_NegInf, R_Nan;
struct
redisServer
server
;
/* server global state */
struct
redisCommand
*
commandTable
;
/* Our command table. Command flags are expressed using strings where every
* character represents a flag. Later the populateCommandTable() function will
* take care of populating the real 'flags' field using this characters.
/* Our command table.
*
* Every entry is composed of the following fields:
*
* name: a string representing the command name.
* function: pointer to the C function implementing the command.
* arity: number of arguments, it is possible to use -N to say >= N
* sflags: command flags as string. See below for a table of flags.
* flags: flags as bitmask. Computed by Redis using the 'sflags' field.
* get_keys_proc: an optional function to get key arguments from a command.
* This is only used when the following three fields are not
* enough to specify what arguments are keys.
* first_key_index: first argument that is a key
* last_key_index: last argument that is a key
* key_step: step to get all the keys from first to last argument. For instance
* in MSET the step is two since arguments are key,val,key,val,...
* microseconds: microseconds of total execution time for this command.
* calls: total number of calls of this command.
*
* The flags, microseconds and calls fields are computed by Redis and should
* always be set to zero.
*
* Command flags are expressed using strings where every character represents
* a flag. Later the populateCommandTable() function will take care of
* populating the real 'flags' field using this characters.
*
* This is the meaning of the flags:
*
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