SET @transaction_isolation= @@global.transaction_isolation;
SET GLOBAL TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
INSERT INTO cache_policies VALUES("cache_policy", "innodb_only",
"innodb_only", "innodb_only", "innodb_only");
INSERT INTO config_options VALUES("separator", "|");
INSERT INTO containers VALUES ("desc_t1", "test", "t1",
"c1", "c2,c21", "c3", "c4", "c5", "PRIMARY");
USE test;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1        (c1 VARCHAR(32),
c2 VARCHAR(1024),
c21 VARCHAR(1024),
c3 INT, c4 BIGINT UNSIGNED, c5 INT, primary key(c1))
ENGINE = INNODB;
INSERT INTO t1 VALUES ('D', 'Darmstadt', 'City', 0, 0, 0);
INSERT INTO t1 VALUES ('B', 'Berlin', 'Mitte', 0, 0, 0);
INSERT INTO t1 VALUES ('C', 'Cottbus', 'West', 0, 0 ,0);
INSERT INTO t1 VALUES ('H', 'Hamburg', 'Norderstedt', 0, 0, 0);
INSTALL PLUGIN daemon_memcached SONAME 'libmemcached.so';
SELECT @@global.daemon_memcached_w_batch_size;
@@global.daemon_memcached_w_batch_size
3
SET @@global.daemon_memcached_w_batch_size=100;
ERROR HY000: Variable 'daemon_memcached_w_batch_size' is a read only variable
SELECT c1,c2,c21 FROM t1;
c1	c2	c21
B	Berlin	Mitte
C	Cottbus	West
D	Darmstadt	City
H	Hamburg	Norderstedt
Here are the memcached results with D,B,H,C:
Darmstadt|City
Berlin|Mitte
Hamburg|Norderstedt
Cottbus|West
SELECT c1,c2,c21 FROM t1;
c1	c2	c21
B	Berlin	Mitte
C	Cottbus	West
D	Darmstadt	City
H	Hamburg	Norderstedt
Here are the memcached results after set:
Essen|Ost
SELECT c1,c2,c21 FROM t1;
c1	c2	c21
B	Berlin	Mitte
C	Cottbus	West
D	Darmstadt	City
E	Essen	Ost
H	Hamburg	Norderstedt
Here are the memcached results after add:
Frankfurt|Sachsenhause
SELECT c1,c2,c21 FROM t1;
c1	c2	c21
B	Berlin	Mitte
C	Cottbus	West
D	Darmstadt	City
E	Essen	Ost
F	Frankfurt	Sachsenhause
H	Hamburg	Norderstedt
Here are the memcached results after replace:
Frankfurt a. M.|Sachsenhausen
SELECT c1,c2,c21 FROM t1;
c1	c2	c21
B	Berlin	Mitte
C	Cottbus	West
D	Darmstadt	City
E	Essen	Ost
F	Frankfurt a. M.	Sachsenhausen
H	Hamburg	Norderstedt
Here are the memcached results after delete:
SELECT c1,c2,c21 FROM t1;
c1	c2	c21
B	Berlin	Mitte
C	Cottbus	West
D	Darmstadt	City
E	Essen	Ost
H	Hamburg	Norderstedt
Here are the memcached results after add Frankfurt|:
Frankfurt|
Here are the memcached results after add |Airport:
Frankfurt|
SELECT c1,c2,c21 FROM t1;
c1	c2	c21
B	Berlin	Mitte
C	Cottbus	West
D	Darmstadt	City
E	Essen	Ost
F	Frankfurt	NULL
H	Hamburg	Norderstedt
Here are the memcached results after replace Frankfurt a.M.:
Frankfurt a. M.|
Here are the memcached results after replace Sachsenhausen:
|Sachsenhausen
SELECT c1,c2,c21 FROM t1;
c1	c2	c21
B	Berlin	Mitte
C	Cottbus	West
D	Darmstadt	City
E	Essen	Ost
F	NULL	Sachsenhausen
H	Hamburg	Norderstedt
DROP TABLE t1;
UNINSTALL PLUGIN daemon_memcached;
DROP DATABASE innodb_memcache;
SET @@global.transaction_isolation= @transaction_isolation;