From b0a8cb13bf06dc2b42b346cfb5c45c42ef072d62 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C3=A9ter=20Szil=C3=A1gyi?= <peterke@gmail.com>
Date: Thu, 5 Oct 2023 10:55:32 +0300
Subject: [PATCH] miner: optimistically import built payloads to lower API
 latency

---
 miner/payload_building.go | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/miner/payload_building.go b/miner/payload_building.go
index 7d8c4368bf..d7e6c7fb4f 100644
--- a/miner/payload_building.go
+++ b/miner/payload_building.go
@@ -193,6 +193,7 @@ func (w *worker) buildPayload(args *BuildPayloadArgs) (*Payload, error) {
 	if empty.err != nil {
 		return nil, empty.err
 	}
+	w.chain.InsertBlockWithoutSetHead(empty.block) // ignore error, we're caching (also chain will log)
 
 	// Construct a payload object for return.
 	payload := newPayload(empty.block, args.Id())
@@ -228,6 +229,7 @@ func (w *worker) buildPayload(args *BuildPayloadArgs) (*Payload, error) {
 				r := w.getSealingBlock(fullParams)
 				if r.err == nil {
 					payload.update(r, time.Since(start))
+					w.chain.InsertBlockWithoutSetHead(r.block) // ignore error, we're caching (also chain will log)
 				}
 				timer.Reset(w.recommit)
 			case <-payload.stop: