Oracle Visual Builder: Applications That Outlive Their First Release · Module 15 · Performance
Measure before you change anything
Lesson 148 of 176 · 3 min
The NETWORK TAB and the PERFORMANCE PANEL. What to look at, and why THE FIRST THING EVERYBODY BLAMES IS RARELY IT. "The application is slow" is a symptom with four or five common causes, and guessing between them is how a week goes into optimising something that was never the problem. THE FIRST THING EVERYBODY BLAMES IS THE PLATFORM — "it is slow because it is low-code". Almost always wrong. The overwhelming majority of slow pages in this product are slow because of what they ASK FOR, and that is a decision rather than a limitation — Lessons 2 and 3. SO START WITH THE NETWORK TAB, BECAUSE IT ANSWERS THE TWO BIGGEST QUESTIONS AT ONCE. How many requests does this page make, and how large is each response? A page making nine calls where it needs two, or receiving four hundred kilobytes to display twenty rows, has its answer…
The full lesson is part of the course
The video, the complete written lesson and the module quiz are included in Oracle Visual Builder: Applications That Outlive Their First Release, with a certificate on completion and a fourteen-day refund window.