This commit fixes two corner cases for the TTL command.
1) When the key was already logically expired (expire time older
than current time) the command returned -1 instead of -2.
2) When the key was existing and the expire was found to be exactly 0
(the key was just about to expire), the command reported -1 (that is, no
expire) instead of a TTL of zero (that is, about to expire).
This commit fixes two corner cases for the TTL command.
1) When the key was already logically expired (expire time older
than current time) the command returned -1 instead of -2.
2) When the key was existing and the expire was found to be exactly 0
(the key was just about to expire), the command reported -1 (that is, no
expire) instead of a TTL of zero (that is, about to expire).
MULTI/EXEC is now propagated to the AOF / Slaves only once we encounter
the first command that is not a read-only one inside the transaction.
The old behavior was to always propagate an empty MULTI/EXEC block when
the transaction was composed just of read only commands, or even
completely empty. This created two problems:
1) It's a bandwidth waste in the replication link and a space waste
inside the AOF file.
2) We used to always increment server.dirty to force the propagation of
the EXEC command, resulting into triggering RDB saves more often
than needed.
Note: even read-only commands may also trigger writes that will be
propagated, when we access a key that is found expired and Redis will
synthesize a DEL operation. However there is no need for this to stay
inside the transaction itself, but only to be ordered.
So for instance something like:
MULTI
GET foo
SET key zap
EXEC
May be propagated into:
DEL foo
MULTI
SET key zap
EXEC
While the DEL is outside the transaction, the commands are delivered in
the right order and it is not possible for other commands to be inserted
between DEL and MULTI.
MULTI/EXEC is now propagated to the AOF / Slaves only once we encounter
the first command that is not a read-only one inside the transaction.
The old behavior was to always propagate an empty MULTI/EXEC block when
the transaction was composed just of read only commands, or even
completely empty. This created two problems:
1) It's a bandwidth waste in the replication link and a space waste
inside the AOF file.
2) We used to always increment server.dirty to force the propagation of
the EXEC command, resulting into triggering RDB saves more often
than needed.
Note: even read-only commands may also trigger writes that will be
propagated, when we access a key that is found expired and Redis will
synthesize a DEL operation. However there is no need for this to stay
inside the transaction itself, but only to be ordered.
So for instance something like:
MULTI
GET foo
SET key zap
EXEC
May be propagated into:
DEL foo
MULTI
SET key zap
EXEC
While the DEL is outside the transaction, the commands are delivered in
the right order and it is not possible for other commands to be inserted
between DEL and MULTI.
Redis-tools is a connection of tools no longer mantained that was
intented as a way to economically make sense of Redis in the pre-vmware
sponsorship era. However there was a nice redis-stat utility, this
commit imports one of the functionalities of this tool here in redis-cli
as it seems to be pretty useful.
Usage: redis-cli --stat
The output is similar to vmstat in the format, but with Redis specific
stuff of course.
From the point of view of the monitored instance, only INFO is used in
order to grab data.
Redis-tools is a connection of tools no longer mantained that was
intented as a way to economically make sense of Redis in the pre-vmware
sponsorship era. However there was a nice redis-stat utility, this
commit imports one of the functionalities of this tool here in redis-cli
as it seems to be pretty useful.
Usage: redis-cli --stat
The output is similar to vmstat in the format, but with Redis specific
stuff of course.
From the point of view of the monitored instance, only INFO is used in
order to grab data.
This is needed in order to colorize it as next step.
We use conventions in output messages such as
>>> This is an action
*** This is a warning
[ERR] This is an error
[OK] That's fine
And so forth, so that a color will be associated checking the first
three chars.
This is needed in order to colorize it as next step.
We use conventions in output messages such as
>>> This is an action
*** This is a warning
[ERR] This is an error
[OK] That's fine
And so forth, so that a color will be associated checking the first
three chars.
