CDC File Transfer
Content Defined Chunking is one of my favorite algorithms because it has some "magic" similar to HyperLogLogs, Bloom filters, etc... This algorithm is good to explain to people, to get them inspired by computer science. I usually explain the simplest variant with rolling hashes.It is interesting what the result will be (average saving on deduplication) if it is applied globally to a large-scale blob storage, such as Amazon S3 or Google Drive (we need metadata storage about chunks, and the chunks can be deduplicated).PS. I don't use this algorithm in ClickHouse, but it always remains tempting.