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https://github.com/scsibug/nostr-rs-relay.git
synced 2024-11-09 21:29:06 -05:00
feat: perform optimization after seeing many events
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parent
7c1516c4fb
commit
43222d44e5
32
src/db.rs
32
src/db.rs
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@ -38,6 +38,8 @@ pub struct SubmittedEvent {
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/// Database file
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pub const DB_FILE: &str = "nostr.db";
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/// How many persisted events before optimization is triggered
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pub const EVENT_COUNT_OPTIMIZE_TRIGGER: usize = 500;
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/// Build a database connection pool.
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/// # Panics
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@ -86,6 +88,12 @@ pub fn build_pool(
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pool
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}
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/// Perform normal maintenance
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pub fn optimize_db(conn: &mut PooledConnection) -> Result<()> {
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conn.execute_batch("PRAGMA optimize;")?;
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Ok(())
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}
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/// Spawn a database writer that persists events to the SQLite store.
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pub async fn db_writer(
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settings: Settings,
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@ -125,6 +133,8 @@ pub async fn db_writer(
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let rps_setting = settings.limits.messages_per_sec;
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let mut most_recent_rate_limit = Instant::now();
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let mut lim_opt = None;
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// Keep rough track of events so we can run optimize eventually.
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let mut optimize_counter: usize = 0;
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let clock = governor::clock::QuantaClock::default();
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if let Some(rps) = rps_setting {
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if rps > 0 {
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@ -257,6 +267,13 @@ pub async fn db_writer(
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notice_tx.try_send(Notice::error(event.id, msg)).ok();
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}
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}
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// Use this as a trigger to do optimization
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optimize_counter += 1;
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if optimize_counter > EVENT_COUNT_OPTIMIZE_TRIGGER {
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info!("running database optimizer");
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optimize_counter = 0;
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optimize_db(&mut pool.get()?).ok();
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}
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}
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// use rate limit, if defined, and if an event was actually written.
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@ -624,7 +641,7 @@ pub async fn db_query(
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let start = Instant::now();
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// generate SQL query
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let (q, p) = query_from_sub(&sub);
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trace!("SQL generated in {:?}", start.elapsed());
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debug!("SQL generated in {:?}", start.elapsed());
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// show pool stats
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log_pool_stats(&pool);
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// cutoff for displaying slow queries
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@ -641,21 +658,26 @@ pub async fn db_query(
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// logging for slow queries; show sub and SQL
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if first_result_elapsed >= slow_cutoff {
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info!(
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"going to query for: {:?} (cid: {}, sub: {:?})",
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"query req (slow): {:?} (cid: {}, sub: {:?})",
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sub, client_id, sub.id
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);
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info!(
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"final query string (slow): {} (cid: {}, sub: {:?})",
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"query string (slow): {} (cid: {}, sub: {:?})",
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q, client_id, sub.id
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);
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} else {
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trace!(
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"going to query for: {:?} (cid: {}, sub: {:?})",
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"query req: {:?} (cid: {}, sub: {:?})",
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sub,
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client_id,
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sub.id
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);
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trace!("final query string: {}", q);
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trace!(
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"query string: {} (cid: {}, sub: {:?})",
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q,
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client_id,
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sub.id
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);
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}
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debug!(
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"first result in {:?} (cid: {}, sub: {:?})",
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