Erigon is a re-engineered Ethereum implementation to make it more efficient and reduce disk space usage.
Erigon uses a more effective system to store data, and three main features allow Erigon to be so good at optimizing disk space
Erigon uses an ETL (Extract, transform, Load) architecture to process data. It extracts the data from its source, transforms it into the required data type, loads it into a temporary file, and places it in the correct order in the database. This way, the process is sped up by pre-processing data before saving it into the database.