Contents
Are database calls expensive?
If you are going to process every item, just make one call unless it would use an outrageous amount of memory. Just takin a shot: the DB calls will most likely be more expensive.
How long does a database call take?
The query takes 20 to 500 ms (or sometimes more) depending on the system and the amount of data. The performance of the database or the database server has a significant influence on the speed.
Why are reads more expensive than writings?
You can’t say that writes are always more expensive than reads. But if the data isn’t in RAM yet, then a read request must go visit the disk. The disk read must be synchronous, in that it can’t return the query result until that disk I/O has been completed. Therefore sometimes reads might be expensive.
What happens to database performance with connection pooling?
This creates a large amount of overhead causing database performance to deteriorate. Consumers of your service expect fast response times. If that performance deteriorates, it can lead to poor user experiences, revenue losses, and even unscheduled downtime.
What can I do to improve the performance of my database?
Also, make sure your database runs on dedicated hard drives, as this should keep disk fragmentation caused by other processes to a minimum. One number to keep an eye on is disk latency. Depending on hard drive load, disk latency will increase, leading to a decrease in database performance. What can you do about this?
How does one request affect another request’s performance?
It assumes that one request cannot influence another request’s performance. Resources are shared, such as disk I/O, network bandwidth, connection pools, memory, CPU cycles, etc. Therefore, reducing one database call’s use of a shared resource can prevent it from causing other requests to slow down.
How does Entity Framework work with the database?
As needed. Because an open connection to the database consumes a valuable resource, the Entity Framework opens and closes the database connection only as needed. You can also explicitly open the connection. For more information, see Managing Connections and Transactions. Once in each application domain.