How to make apache slow and unreliable?

Question

I am writing code on a mobile device that uses the REST service to retrieve data from the host. These REST services are verified by Apache. In test mode, I would like to simulate network failures (as if the device lost its connection to the cell) in order to test applications that handle intermittent failures. I also need to check its behavior on slow network connections.

I am currently using Traffic Shaper XP to slow down my network connection, but now I need to do something so that the Apache server sends the connection, both in random order and in predefined sequences (to configure and repeat certain test scenarios).

Answer 1

DummyNet seems to be the closest thing, but it's still not quite there. For repeated testing, it would be nice to have some control over dropped packets and reloads.

Answer 2

In Apache2, you can do this slowly by editing the preview options in apache2.conf. The settings below should make apache pretty slow. They made my local web application load 700% longer.

<IfModule mpm_prefork_module> StartServers 2 MinSpareServers 2 MaxSpareServers 2 MaxClients 4 MaxRequestsPerChild 0 </IfModule> 

Answer 3

Write a small proxy server that forwards TCP connections from your application to the apache server and which you can configure in your test to disconnect the connection after x number of bytes or milliseconds.

Answer 4

Is this a Unix or Linux environment? nice , to give it a lower priority, and then complete the high task of using the processor, for example, listening to music, playing a movie, calculating pi, etc. A low priority for Apache should create problems similar to what you are looking for.

Answer 5

On another (or the same) computer, use the ab command line tool to get some load on apache. More info here .

Answer 6

I highly recommend https://github.com/Shopify/toxiproxy from Shopify:

Download https://github.com/Shopify/toxiproxy/releases client and server

Start the server:

  ./toxiproxy-server-linux-amd64 

On setting up a Cli proxy server for Apache on a different port, for example. 8080

 ./toxiproxy-cli create apache -l localhost:8080 -u localhost:80 

Make the connection slow and unreliable:

 ./toxiproxy-cli toxic add apache -t latency -a latency=3000 ./toxiproxy-cli toxic add apache -t limit_data -a bytes=1000 --tox=0.01 

here add 3 seconds of delay and stop after 1000 bytes for 1% of requests, there are other bandwidth options, etc. You can add or remove them during use. There are many other functions and libraries.