Document ingestion for retrieval systems: extracting text from real files, stripping boilerplate, deduplication, keeping an index fresh, and deletions.https://contextaugmentedllm.com/https://contextaugmentedllm.com/blogs/deletion-is-the-hard-one/https://contextaugmentedllm.com/blogs/deletion-is-the-hard-one/Removing a source file removes nothing downstream. Everything derived from it persists, stays retrievable, and answers questions as though it still existed.Sun, 26 Jul 2026 00:00:00 GMTdeletionfreshnessmetadatapipelineshttps://contextaugmentedllm.com/blogs/keeping-an-index-fresh/https://contextaugmentedllm.com/blogs/keeping-an-index-fresh/A full rebuild is correct and unaffordable. Incremental sync is affordable and drifts. What decides the difference is how you detect that something changed.Sat, 25 Jul 2026 00:00:00 GMTfreshnessmetadatapipelineshttps://contextaugmentedllm.com/blogs/the-same-document-three-times/https://contextaugmentedllm.com/blogs/the-same-document-three-times/Identical copies, near-copies and successive versions look alike and need opposite treatment. Deduplicating a version history destroys the record.Fri, 24 Jul 2026 00:00:00 GMTdeduplicationmetadatapipelineshttps://contextaugmentedllm.com/blogs/boilerplate-is-not-content/https://contextaugmentedllm.com/blogs/boilerplate-is-not-content/Navigation, footers and disclaimers extract perfectly and index as fact. Repeated across a corpus, they crowd out the pages they were attached to.Thu, 23 Jul 2026 00:00:00 GMTboilerplateextractionpipelineshttps://contextaugmentedllm.com/blogs/extracting-text-from-real-documents/https://contextaugmentedllm.com/blogs/extracting-text-from-real-documents/A PDF that extracts as scrambled reading order does not raise an error. It produces text, reports success, and poisons everything downstream of it.Wed, 22 Jul 2026 00:00:00 GMTextractionocrpipelines