@godblessstrawberry I didn't uncover any m3u8 extension file in Community tab of Developer Resources in chrome browser. Could you remember to advise me what is the challenge? Thanks I edited configuration file of my job to append no-cache headers, but that also disabled caching static information, which isn't really usually https://sociallytraffic.com/story5967715/little-known-facts-about-%E4%BB%AE%E6%83%B3%E9%80%9A%E8%B2%A8-%E3%82%AB%E3%82%B8%E3%83%8E-%E3%82%B3%E3%82%A4%E3%83%B3