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Diffstat (limited to 'iredis/data/commands/eval_ro.md')
| -rw-r--r-- | iredis/data/commands/eval_ro.md | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/iredis/data/commands/eval_ro.md b/iredis/data/commands/eval_ro.md new file mode 100644 index 0000000..db8c707 --- /dev/null +++ b/iredis/data/commands/eval_ro.md @@ -0,0 +1,19 @@ +This is a read-only variant of the `EVAL` command that isn't allowed to execute +commands that modify data. + +Unlike `EVAL`, scripts executed with this command can always be killed and never +affect the replication stream. Because it can only read data, this command can +always be executed on a master or a replica. + +@examples + +``` +> SET mykey "Hello" +OK + +> EVAL_RO "return redis.call('GET', KEYS[1])" 1 mykey +"Hello" + +> EVAL_RO "return redis.call('DEL', KEYS[1])" 1 mykey +(error) ERR Error running script (call to f_359f69785f876b7f3f60597d81534f3d6c403284): @user_script:1: @user_script: 1: Write commands are not allowed from read-only scripts +``` |