spacewander opened a new issue #1567:
URL: https://github.com/apache/incubator-apisix/issues/1567
Currently we configure the buffer of the access log like this:
```
access_log {* http.access_log *} main buffer=32768 flush=3;
```
According to Nginx's doc:
> The buffer size must not exceed the size of an atomic write to a disk file
http://nginx.org/en/docs/http/ngx_http_log_module.html
And for Linux, the default atomic write size is `PIPE_BUF` (4096), see `man
7 pipe`.
Therefore, the default size is too large to be safe.
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