Book Image

Learning Cypher

By : Onofrio Panzarino
Book Image

Learning Cypher

By: Onofrio Panzarino

Overview of this book

Table of Contents (13 chapters)

Profiling queries

When we have users who complain of poor performance, the first step is profiling our application. Nowadays, every programming language can be profiled to look for the cause of poor performance. It's an important step because it lets us focus only on the correct cause of the performance decay that the users are experiencing. The risk, in fact, is to go on a wild goose chase, trying to optimize functions and queries that don't affect the whole performance of the application in a relevant way. Above all, we do not have an objective measure of the improvements that we get.

Therefore, suppose that we use a profiler, that is specific to our programming language (either Java, PHP, Ruby, or anything else), and we found that the code executing the following query is very slow:

MATCH(n:User {email:'[email protected]'})

We need a way to profile this query to understand the operation made by the Cypher engine and its performance cost so that we can act to reduce the...