## 問題： an upstream response is buffered to a temporary file ## 中文 第一個問題（“上游響應緩沖到臨時文件”）是由一些包含大量內容的頁面引起的，通過如下增加緩沖區大小解決的： ``` proxy_buffers 8 16k; proxy_buffer_size 32k; passenger_buffers 8 16k;//實際發現這個不合適，所以我注釋了 passenger_buffer_size 32k;//實際發現這個不合適，所以我注釋了 ``` 第二個問題（“上游在從上游讀取響應頭時過早關閉連接”）是通過增加服務器上的內存并將乘客切換到保守的生成模式來解決的。（這似乎與使用一個試圖運行后臺作業的舊Ruby Gem密切相關。）  ## 原文說明： The first problem ("upstream response is buffered to a temporary file") was caused by some pages with a lot of content and was solved by increasing the buffer size as follows: ``` proxy_buffers 8 16k; proxy_buffer_size 32k; passenger_buffers 8 16k; passenger_buffer_size 32k; ``` The second problem ('upstream prematurely closed connection while reading response header from upstream') was solved by increasing the memory on the server and switching Passenger to conservative spawn mode. (It appears to have been closely related to using an old Ruby gem which was trying to run background jobs.) ## 解決參考鏈接： https://stackoverflow.com/questions/8235168/passenger-nginx-502-bad-gateway-errors-in-production