FB 将 Memcached 服务器分割成独立的池。 • wildcard pool:默认 pool 用来存储大部分数据 • small pool:存储访问频率高但 cache miss 的成本不高的数据 • large pool:存储访问频率低但 cache miss 的成本高的数据 可以看出,更新频率高的占了大部分,所
default_pool_size 100 reserve_pool_size 5 reserve_pool_timeout 3 max_client_conn 2048 transaction server_idle_timeout 30 With that all said there is still some work left to be done such as: implementing service discovery (#2042), improving how we check if a secondary is available (#2866...
SQL editor SQL execution Create a simple connection Save results in a DataFrame Override connection properties Provide dynamic values in SQL queries Connection caching Create cached connections List cached connections Clear cached connections Disable cached connections Configure network access (for administrators...
The minimum and maximum instance memory size for an instance type, in MiB. Required: Yes Type: MemoryMiBRequest Update requires: Some interruptions NetworkBandwidthGbps The minimum and maximum amount of network bandwidth, in gigabits per second (Gbps). Default: No mini...
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i.e. THDs are not reused across connections. The size of the THD is ~10K and its definition is found insql_class.h. The THD is a large data structure which is used to keep track of various aspects of execution state. Memory rooted in the THD will grow significantly during query execut...
SQLSTATE=00000 db2 relocatedb... db2 unquiesce database 2.1.2 Migrating between versions of DB2 UDB Migrating between versions of DB2 UDB has been simplified with DB2 system commands that are included with DB2 UDB V8.1. The migration of your databases is required if you would like to continu...
SQL Job Using DLI Submitting a Flink Job Using DLI Submitting a Spark Job Using DLI Submitting a DLI Job Using a Notebook Instance Using Cloud Eye to Monitor DLI Using CTS to Audit DLI Permissions Management Common DLI Management Operations Best Practices Developer Guide SQL Syntax Reference API...
In the “memory-bound” case they exceed the memory pool allocated for a partition and in the “thread-bound” case they fully saturate the corresponding hardware thread. In our case, the number of partitions is fixed. Also, since partitions are equally populated with same size users they all...
Finally, we come topgcompacttable. This tool is excellent for reducing table bloat in a completely nonblocking manner. It works by reordering tuples from the end of a table towards the front of a table, which allows the table size to shrink. We use this on oursubscriberstables in place ...