The readme mentions this repo is "used as an alternate mechanism for pre-populating the cache (the other mechanism being the automated pre-population techniques described in the NV documentation)."
Since version 5.2.1 the cache population is no longer driven from the EIS tier, so the only mechanism for pre-population is the 'client driven' approach and the documentation only mentions the nv-tilecacher.
The readme mentions this repo is "used as an alternate mechanism for pre-populating the cache (the other mechanism being the automated pre-population techniques described in the NV documentation)."
Since version 5.2.1 the cache population is no longer driven from the EIS tier, so the only mechanism for pre-population is the 'client driven' approach and the documentation only mentions the nv-tilecacher.