0c9a35e2d5
This significantly speeds up the query which bookkeeper often does: "SELECT created_index" " FROM channelmoves" " WHERE payment_hash = X'%s'" " AND credit_msat = %"PRIu64 " AND created_index <= %"PRIu64, On large databases this scan is expensive, and a payment_hash index cuts it down a great deal. It does take longer to load the channelmoves in the first place though (about 3x). Before: $ while sleep 10; do wc -l /tmp/bkpr-progress; done 169505 /tmp/bkpr-progress 196010 /tmp/bkpr-progress 219370 /tmp/bkpr-progress 235671 /tmp/bkpr-progress 244242 /tmp/bkpr-progress 255362 /tmp/bkpr-progress 265636 /tmp/bkpr-progress 276966 /tmp/bkpr-progress 284451 /tmp/bkpr-progress 288836 /tmp/bkpr-progress 296578 /tmp/bkpr-progress 304571 /tmp/bkpr-progress After: $ while sleep 10; do wc -l /tmp/bkpr-progress; done 161421 /tmp/bkpr-progress 238273 /tmp/bkpr-progress 281185 /tmp/bkpr-progress 305787 /tmp/bkpr-progress Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Changelog-Changed: plugins: the sql plugin now keeps an index on `channelmoves` by `payment_hash`.
Plugin Directory
Any file in this directory which is executable and whose name only consists of alphanumeric characters, space, '.', '-' or '_' will be automatically loaded when lightningd starts (unless suppressed with commandline options).