From 68c8588cd55ece55119c310bbbc13a9586ead51c Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Tue, 8 Sep 2026 08:30:33 +0000
Subject: [PATCH] perf(sqlite): use prepare_cached for database queries

Replaces conn.execute() and conn.prepare() with conn.prepare_cached() in the sqlite module. This leverages rusqlite's built-in LRU statement cache to avoid recompiling SQL statements on every loop iteration, resolving N+1 compilation overheads during bulk operations.

Co-authored-by: Tcode-Motion <188012755+Tcode-Motion@users.noreply.github.com>
---
 stdlib/src/sqlite.rs | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/stdlib/src/sqlite.rs b/stdlib/src/sqlite.rs
index c7d8f769..487d44da 100644
--- a/stdlib/src/sqlite.rs
+++ b/stdlib/src/sqlite.rs
@@ -93,7 +93,14 @@ impl StdlibRegistry {
                     CONNECTIONS.with(|m| {
                         let mut map = m.borrow_mut();
                         if let Some(conn) = map.get_mut(&id) {
-                            conn.execute(&sql, rusqlite::params_from_iter(params))
+                            let mut stmt = conn.prepare_cached(&sql).map_err(|e| {
+                                RuntimeError::new(
+                                    RuntimeErrorKind::InvalidOperation(e.to_string()),
+                                    None,
+                                    None,
+                                )
+                            })?;
+                            stmt.execute(rusqlite::params_from_iter(params))
                                 .map_err(|e| {
                                     RuntimeError::new(
                                         RuntimeErrorKind::InvalidOperation(e.to_string()),
@@ -161,7 +168,7 @@ impl StdlibRegistry {
                     let rows = CONNECTIONS.with(|m| {
                         let mut map = m.borrow_mut();
                         if let Some(conn) = map.get_mut(&id) {
-                            let mut stmt = conn.prepare(&sql).map_err(|e| {
+                            let mut stmt = conn.prepare_cached(&sql).map_err(|e| {
                                 RuntimeError::new(
                                     RuntimeErrorKind::InvalidOperation(e.to_string()),
                                     None,