KJ SaxenaKJ Saxena 21.9k2424 gold badges8686 silver badges111111 bronze badges one nine ...This really is old, so presumbably your recommendation is always that this is because in more recent implementations this tends to generally be interpreted given that the cacheing header cache-control: no-cache. So basically you would be improved to https://r44mainrotorbladesc016-702467.wannawiki.com/773358/the_smart_trick_of_r44_main_rotor_blades_model_c016_7_that_nobody_is_discussing