Indeed in these cases lz4 makes sense. I'm thinking of what lz4 was created to "replace" namely snappy in SSTables: the pattern is mostly write once, read at mo

Indeed in these cases lz4 makes sense. I'm thinking of what lz4 was created to "replace" namely snappy in SSTables: the pattern is mostly write once, read at most once or twice, and both of those are sequential to benefit of non-SSDs speeds. In these situations fast (de)compression schemes are definitely a gain.