> For the complete documentation index, see [llms.txt](https://bamtech.gitbook.io/dev-standards/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://bamtech.gitbook.io/dev-standards/performance/performance-decision-flow.s.md).

# performance-decision-flow\.s

## Owner: [Thibaut Guedou](https://github.com/thibautguedou3)

## Checks

* Back-end:
  * Your requests take less than 500ms to complete
* Front-end:
  * Your pages take less than 2s to display
  * No visible lags
  * Every action has instant visual feedback

## Do you know how to investigate your performance issues?

### General

1. [Simulate a network like LTE, 3G or Edge with an iPhone in hotstop](/dev-standards/performance/front/simulate-network-iphone.mo.md)

### Backend

1. [How to investigate a general backend performance issue](/dev-standards/performance/backend/how-to-investigate-performance.mo.md)
2. [Python investigation tools](/dev-standards/performance/backend/python-investigation-tools.mo.md)
3. [Output SQL Alchemy ORM query](/dev-standards/performance/backend/output-sql-alchemy-orm-query.mo.md)

## Now that you investigated, can we help you?

### Backend

1. [Cache your routes using varnish](/dev-standards/performance/backend/cache-routes-using-varnish.mo.md)
2. [Serve images as static files](https://github.com/bamlab/dev-standards/tree/6f2accdb76c138f4fd0946ee2557c21b2d2d66e9/performance/backend/serve-images-as-static-files.mo)
3. [Minimize your number of SQL queries](/dev-standards/performance/backend/minimize-number-sql-queries.mo.md)

### Front

1. [Build performant application](/dev-standards/performance/front/react-native-performance.s.md)
2. [Investigate performance issues](/dev-standards/performance/front/how-to-investigate-performance.mo.md)
3. Pure components **-> \[To do]**
4. [Optimize the render time of lists, tables and charts](/dev-standards/performance/front/table-and-chart-with-good-performance.mo.md)

## Have you a mean of keeping the performance under control?

### Backend

* [Monitor your backend performance with K6](https://github.com/bamlab/performance-monitoring)

## Good examples

> Please andon and/or create an issue if you need one!

## Bad examples

> Please andon and/or create an issue if you need one!