ndb_cache.test

视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.

-- source include/have_query_cache.inc
-- source include/have_ndb.inc
-- source include/not_embedded.inc

--disable_warnings
drop table if exists t1;
--enable_warnings

# Turn on and reset query cache
set GLOBAL query_cache_type=on;
set GLOBAL query_cache_size=1355776;
reset query cache;
flush status;

# Create test table in NDB
CREATE TABLE t1 ( pk int not null primary key,
 a int, b int not null, c varchar(20)) ENGINE=ndbcluster;
insert into t1 value (1, 2, 3, 'First row');

# Perform one query which should be inerted in query cache
select * from t1;
show status like "Qcache_queries_in_cache";
show status like "Qcache_inserts";
show status like "Qcache_hits";

# Perform the same query and make sure the query cache is hit
select * from t1;
show status like "Qcache_hits";

# Update the table and make sure the correct data is returned
update t1 set a=3 where pk=1;
select * from t1;
show status like "Qcache_inserts";
show status like "Qcache_hits";

# Insert a new record and make sure the correct data is returned
insert into t1 value (2, 7, 8, 'Second row');
insert into t1 value (4, 5, 6, 'Fourth row');
select * from t1 order by pk;
show status like "Qcache_inserts";
show status like "Qcache_hits";
select * from t1 order by pk;
show status like "Qcache_hits";

# Perform a "new" query and make sure the query cache is not hit
select * from t1 where b=3;
show status like "Qcache_queries_in_cache";
show status like "Qcache_hits";

# Same query again...
select * from t1 where b=3;
show status like "Qcache_hits";

# Delete from the table
delete from t1 where c='Fourth row';
show status like "Qcache_queries_in_cache";
select * from t1 where b=3;
show status like "Qcache_hits";

# Start another connection and check that the query cache is hit
connect (con1,localhost,root,,);
connection con1;
use test;
select * from t1 order by pk;
select * from t1 where b=3;
show status like "Qcache_hits";

# Update the table and switch to other connection 
update t1 set a=4 where b=3;
connect (con2,localhost,root,,);
connection con2;
use test;
show status like "Qcache_queries_in_cache";
select * from t1 order by pk desc;
select * from t1 order by pk desc;
show status like "Qcache_inserts";
show status like "Qcache_hits";
connection con1;
select * from t1 order by pk desc;
select * from t1 order by pk desc;
show status like "Qcache_queries_in_cache";
show status like "Qcache_inserts";
show status like "Qcache_hits";

# Use transactions and make sure the query cache is not updated until
# transaction is commited
begin;
update t1 set a=5 where pk=1;
# Note!! the below test shows that table is invalidated 
# before transaction is committed
# TODO Fix so that cache is not invalidated HERE!
show status like "Qcache_queries_in_cache";
show status like "Qcache_inserts";
show status like "Qcache_hits";
connection con2;
select * from t1 order by pk desc;
show status like "Qcache_queries_in_cache";
show status like "Qcache_inserts";
show status like "Qcache_hits";
connection con1;
commit;
# TODO Here query is invalidated once again, commit count in NDB has changed
show status like "Qcache_queries_in_cache";
show status like "Qcache_inserts";
show status like "Qcache_hits";
connection con2;
select * from t1 order by pk desc;
show status like "Qcache_inserts";
show status like "Qcache_hits";
connection con1;
select * from t1 order by pk desc;
show status like "Qcache_queries_in_cache";
show status like "Qcache_inserts";
show status like "Qcache_hits";

drop table t1;

show status like "Qcache_queries_in_cache";

SET GLOBAL query_cache_size=0;

# End of 4.1 tests