From 83e9655c0c2ff6e609cba8e4499cf0527f31a0ed Mon Sep 17 00:00:00 2001
From: Jonathan de Jong <jonathan@automatia.nl>
Date: Tue, 23 Nov 2021 19:13:11 +0100
Subject: [PATCH] add comments and fix type

---
 src/database.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/database.rs b/src/database.rs
index c198f0e..4177b1a 100644
--- a/src/database.rs
+++ b/src/database.rs
@@ -970,9 +970,9 @@ impl Database {
         use tokio::time::sleep;
 
         tokio::spawn(async move {
-            let mut interval: usize = 15;
+            let mut interval: u64 = 15;
 
-            const MAX_PRUNE_INTERVAL_SECS: usize = 60;
+            const MAX_PRUNE_INTERVAL_SECS: u64 = 60;
 
             loop {
                 sleep(Duration::from_secs(interval)).await;
@@ -985,6 +985,8 @@ impl Database {
                     }
                 }
 
+                // Will half the next interval if it found anything (until its 1 second)
+                // Will add one second to next interval if it didn't find anything (until its >=MAX_PRUNE_INTERVAL_SECS)
                 if pruned {
                     if interval > 1 {
                         interval /= 2;