Coverage, Duplicates and What Limits the Crawl
Country sites are separate indexes. Monster runs national sites outside the United States, and they hold their own postings rather than mirroring the US board. Asia Pacific and the Middle East are a different case: Quess Corp bought that Monster business in 2018 and rebranded it as foundit in late 2022, so foundit.in and its sister sites are no longer Monster. We scope each country explicitly so nobody assumes coverage that is not there.
Duplicates come from three directions. The same advertisement can appear on Monster and CareerBuilder through the shared posting product, one employer can run near-identical listings in nearby cities, and postings are fed in from applicant tracking systems in batches. We deduplicate on the job id first, then run a configurable second pass on employer, title and location.
Closed postings stop being addressable. A Monster listing that has expired is not a stable public page you can re-fetch, so a longitudinal record has to capture each posting while it is live. We build that as an append-only history with a first-seen and last-seen date per job id.
robots.txt sets the shape of the crawl. Monster allows the plain keyword search path and disallows its paginated and faceted variants, including the recency, radius and employment-type parameters, along with the entire member profile tree. Deep coverage is therefore assembled from many narrow queries rather than walking one result set to an arbitrary depth.