Add some options to r2d2 pool

src/main.rs

@@ -46,7 +46,14 @@ fn main() {
     let redis_connstring = var("REDIS_CONNSTRING").unwrap_or_else(|_| String::from("redis://localhost"));
     let manager = r2d2_redis::RedisConnectionManager::new(&*redis_connstring).unwrap();
     let pool = r2d2::Pool::builder()
+        // At least 1 connection must be active
+        .min_idle(Some(2))
+        // Try to get a connection for max 1 second
         .connection_timeout(Duration::from_secs(1))
+        // Don't log errors directly.
+        // They can get quite verbose, and we're already catching and
+        // logging the corresponding results anyways.
+        .error_handler(Box::new(r2d2::NopErrorHandler))
         .build(manager)
         .unwrap();