cassandra introduces risk read_amplification: DBRaven

cassandraIntroduces Riskread amplification

Source: Technology·Target: Failure Mode

Summary

Cassandra's LSM-tree storage engine accumulates SSTables that must be checked during reads; insufficient compaction allows SSTable depth to grow, increasing the I/O required per read.

Evidence

·read_amplification lists cassandra in affects_technologies and names LSM-tree engines as a precondition (failure_modes/read_amplification.yaml)
·cassandra documents compaction lag causing SSTable growth and tombstone accumulation degrading reads (technologies/cassandra.yaml degradation_patterns)

Evidence grounding

Grounded, 2 supporting items

Cassandra's LSM engine grows SSTable depth under write load, raising read I/O.