Similarly to cosmos-sdk, we incorporate pruning into our (scraped) chain data. We attempt to follow their strategies as closely as possible for convenience's sake. Therefore, the following are available:

Strategies

The strategies are configured in config.toml, with the format pruning = "<strategy>" where the options are:

default: only the last 362,880 states(approximately 3.5 weeks worth of state) are kept; pruning at 10 block intervals
nothing: all historic states will be saved, nothing will be deleted (i.e. archiving node)
everything: 2 latest states will be kept; pruning at 10 block intervals.
custom: allow pruning options to be manually specified through pruning.keep_recent, and pruning.interval

Custom Pruning

These are applied if and only if the pruning strategy is custom:

pruning.keep_recent: N means to keep all of the last N blocks
pruning.interval: N means to delete old block data from disk every Nth block.