From 5ffa106e8bcefd5e8e290e89da47dc6442a9c97c Mon Sep 17 00:00:00 2001 From: erio Date: Fri, 17 Apr 2026 19:34:52 +0800 Subject: [PATCH] chore(gateway): bump upstream response read limit 64MB -> 128MB MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 单张 4K PNG base64 最坏情况可达 67MB，image_generation_call 返回多张 候选图时 64MB 仍可能被撑爆。128MB 能覆盖 2-3 张 4K PNG 的常见场景，且相对 请求体上限 256MB 仍有缓冲。 --- backend/internal/config/config.go | 2 +- backend/internal/service/upstream_response_limit.go | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/backend/internal/config/config.go b/backend/internal/config/config.go index 3d9438ce30..911830787e 100644 --- a/backend/internal/config/config.go +++ b/backend/internal/config/config.go @@ -1407,7 +1407,7 @@ func setDefaults() { viper.SetDefault("gateway.antigravity_fallback_cooldown_minutes", 1) viper.SetDefault("gateway.antigravity_extra_retries", 10) viper.SetDefault("gateway.max_body_size", int64(256*1024*1024)) - viper.SetDefault("gateway.upstream_response_read_max_bytes", int64(64*1024*1024)) + viper.SetDefault("gateway.upstream_response_read_max_bytes", int64(128*1024*1024)) viper.SetDefault("gateway.proxy_probe_response_read_max_bytes", int64(1024*1024)) viper.SetDefault("gateway.gemini_debug_response_headers", false) viper.SetDefault("gateway.connection_pool_isolation", ConnectionPoolIsolationAccountProxy) diff --git a/backend/internal/service/upstream_response_limit.go b/backend/internal/service/upstream_response_limit.go index bc3bfdaf77..2bbe438774 100644 --- a/backend/internal/service/upstream_response_limit.go +++ b/backend/internal/service/upstream_response_limit.go @@ -13,9 +13,9 @@ import ( var ErrUpstreamResponseBodyTooLarge = errors.New("upstream response body too large") // defaultUpstreamResponseReadMaxBytes 上游非流式响应体的默认读取上限。 -// 64 MB 足以容纳多张高清图（base64 膨胀 33%，64MB ≈ 48MB 原始字节）。 +// 128 MB 可容纳 2-3 张 4K PNG（base64 膨胀 33%，单张 4K PNG 最坏约 67MB base64）。 // 可通过 gateway.upstream_response_read_max_bytes 配置项覆盖。 -const defaultUpstreamResponseReadMaxBytes int64 = 64 * 1024 * 1024 +const defaultUpstreamResponseReadMaxBytes int64 = 128 * 1024 * 1024 func resolveUpstreamResponseReadLimit(cfg *config.Config) int64 { if cfg != nil && cfg.Gateway.UpstreamResponseReadMaxBytes > 0 {