org/documentation/index.html Postgres Conference China 2016 中国用户大会 Roadmap • 9.6 Merge • Global Transaction Manager Improvements – Including making it optional when not needed • Make XL a more robust analytical queries • Direct Data Node <-> Data Node communication and row shipping • Global Transaction Manager (GTM) • Provides a consistent view to transactions • GTM Proxy to increase performance Postgres peer data nodes for distributed joins Postgres Conference China 2016 中国用户大会 Global Transaction Manager (GTM) • Handles necessary MVCC tasks • Transaction IDs • Snapshots • Manages cluster wide values

described in The design of the POSTGRES rules system. The rationale and architecture of the storage manager were detailed in The design of the POSTGRES storage system . POSTGRES has undergone several major by IBM3) picked up the code and commercialized it. In late 1992, POSTGRES became the primary data manager for the Sequoia 2000 scientific computing project4. The size of the external user community nearly pg_rotate_logfile signals the log-file manager to switch to a new output file immediately. This works only when redirect_stderr is used for logging, since otherwise there is no log-file manager subpro- cess. The functions

described in The design of the POSTGRES rules system. The rationale and architecture of the storage manager were detailed in The design of the POSTGRES storage system . POSTGRES has undergone several major by IBM3) picked up the code and commercialized it. In late 1992, POSTGRES became the primary data manager for the Sequoia 2000 scientific computing project4. The size of the external user community nearly pg_rotate_logfile signals the log-file manager to switch to a new output file immediately. This works only when redirect_stderr is used for logging, since otherwise there is no log-file manager subpro- cess. The functions

described in The design of the POSTGRES rules system. The rationale and architecture of the storage manager were detailed in The design of the POSTGRES storage system. POSTGRES has undergone several major IBM3.) picked up the code and commercialized it. In late 1992, POSTGRES became the primary data manager for the Sequoia 20004 scientific computing project. The size of the external user community nearly pg_locks system view (Section 41.33). For more information on monitoring the status of the lock manager subsystem, refer to Chapter 23. 12.3.1. Table-Level Locks The list below shows the available lock

scribed in The design of the POSTGRES rules system. The rationale and architecture of the storage manager were detailed in The design of the POSTGRES storage system. POSTGRES has undergone several major IBM3.) picked up the code and commercialized it. In late 1992, POSTGRES became the primary data manager for the Sequoia 20004 scientific computing project. The size of the external user community nearly pg_locks system view (Section 41.33). For more information on monitoring the status of the lock manager subsystem, refer to Chapter 23. 12.3.1. Table-Level Locks The list below shows the available lock

described in The design of the POSTGRES rules system. The rationale and architecture of the storage manager were detailed in The design of the POSTGRES storage system . POSTGRES has undergone several major by IBM3) picked up the code and commercialized it. In late 1992, POSTGRES became the primary data manager for the Sequoia 2000 scientific computing project4. The size of the external user community nearly pg_rotate_logfile signals the log-file manager to switch to a new output file immediately. This works only when redirect_stderr is used for logging, since otherwise there is no log-file manager subpro- cess. The functions

described in The design of the POSTGRES rules system. The rationale and architecture of the storage manager were detailed in The design of the POSTGRES storage system . POSTGRES has undergone several major by IBM3) picked up the code and commercialized it. In late 1992, POSTGRES became the primary data manager for the Sequoia 2000 scientific computing project4. The size of the external user community nearly pg_rotate_logfile signals the log-file manager to switch to a new output file immediately. This works only when redirect_stderr is used for logging, since otherwise there is no log-file manager subpro- cess. The functions

described in The design of the POSTGRES rules system. The rationale and architecture of the storage manager were detailed in The design of the POSTGRES storage system . POSTGRES has undergone several major by IBM3) picked up the code and commercialized it. In late 1992, POSTGRES became the primary data manager for the Sequoia 2000 scientific computing project4. The size of the external user community nearly pg_stat_activity view, or by listing the postgres processes on the server (using ps on Unix or the Task Manager on Windows). The role of an active backend can be found from the usename column of the pg_stat_activity

described in The design of the POSTGRES rules system. The rationale and architecture of the storage manager were detailed in The design of the POSTGRES storage system . POSTGRES has undergone several major by IBM3) picked up the code and commercialized it. In late 1992, POSTGRES became the primary data manager for the Sequoia 2000 scientific computing project4. The size of the external user community nearly TABLE accounts (manager text, company text, contact_email text); ALTER TABLE accounts ENABLE ROW LEVEL SECURITY; CREATE POLICY account_managers ON accounts TO managers USING (manager = current_user);

described in The design of the POSTGRES rules system. The rationale and architecture of the storage manager were detailed in The design of the POSTGRES storage system . POSTGRES has undergone several major by IBM3) picked up the code and commercialized it. In late 1992, POSTGRES became the primary data manager for the Sequoia 2000 scientific computing project4. The size of the external user community nearly TABLE accounts (manager text, company text, contact_email text); ALTER TABLE accounts ENABLE ROW LEVEL SECURITY; CREATE POLICY account_managers ON accounts TO managers USING (manager = current_user);