Zoltan Boszormenyi wrote: > Hi, > > I got a question about scalability in high volume insert situation > where the table has a primary key and several non-unique indexes > on other columns of the table. How does PostgreSQL behave > in terms of scalability? The high volume of inserts comes from > multiple transactions. btree and gist indexes can have multiple concurrent insertions in flight. A potential for blocking is in UNIQUE indexes: if two transactions try to insert the same value in the unique index, the second one will block until the first transaction finishes. -- Alvaro Herrera http://www.CommandPrompt.com/ The PostgreSQL Company - Command Prompt, Inc.
