It is a warehouse the size of 12 football pitches that promises to create much-needed jobs and development in Caucaia city, north-east Brazil. But it won’t have shelves stocked with products. This vast building will be a datacentre, believed to be earmarked for TikTok, the Chinese-owned video-sharing app, as part of a 55bn reais (£7.3bn) project to expand its global datacentre infrastructure. As the demand for supercomputer facilities rises, fuelled by the AI boom, Brazil is attracting more and more tech companies. The choice of Caucaia is no accident. Several…