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How does PostgreSQL try to improve its performance?
PostgreSQL tries to hold the most frequently accessed data in memory to make performance improvements based on how your queries are performed and the configuration that you give it. But we’ll return to memory-based performance optimization later.
Why does PostgreSQL need a bigger cache?
The bigger your cache, the less your database will need to go out to disk—which can be painful for performance. PostgreSQL tries to hold the most frequently accessed data in memory to make performance improvements based on how your queries are performed and the configuration that you give it.
What does the life cycle of PostgreSQL mean?
The life cycle is what happens from an initial request to the database right up to the response it sends. PostgreSQL doesn’t just dip its hand into a big bag of memory. When you have a lot of data, crude fetching of your data can lead to performance drops.
Why does PostgreSQL have a default configuration?
PostgreSQL comes with a set of default configurations. This default configuration is set up for compatibility and is essentially a best guess that tries to suit all possible use cases of PostgreSQL. Luckily for you, that means there are some potential quick wins if you start to tweak the default configuration.
Why is PostgreSQL too slow to read data?
Our system writes a lots of data (kind of Big Data system). Write performance is good enough for our needs but read performance is really too slow. The primary key (constraint) structure is similar for all our tables: timestamp(Timestamp) ; index(smallint) ; key(integer).
Where are the database configuration files in PostgreSQL?
Database configurations in PostgreSQL are made directly in the configuration file ( postgresql.conf), or through running an ALTER SYSTEM command. If you want to see all the current configurations of your database now, simply run the SHOW command as follows: This command will list out all of the existing configuration and their settings.