My plugin does redirect upon activation –

register_activation_hook(__FILE__, 'example_plugin_activate');
add_action('admin_init', 'example_plugin_redirect');

function example_plugin_activate() {
	add_option('example_plugin_do_activation_redirect', true);
}

function example_plugin_redirect() {
	if (get_option('example_plugin_do_activation_redirect', false)) {
		delete_option('example_plugin_do_activation_redirect');
		if(!isset($_GET['activate-multi'])) {
 // This is path where I faced redirect loop
			wp_redirect(admin_url( 'options-general.php?page=example' ));
			exit();
		}
	}
}

I use Redis where this example plugin is active.

In a rare instance, I have noticed 302 redirect loop

This was fixed when…
1) I deactivated my example plugin
2) and flushed Redis cache.
3) tried activation, got redirected to settings page as expected.
4) I was able to repro this problem only where I use Redis, not at any non-Redis site. Means, normally it works in 99% cases.

Any ideas? Does Redis purge its cache upon any plugin activation?

Thanks