Module ngx_http_slice_module

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Nginx/docs/latest/http/ngx http slice module

Module ngx_http_slice_module

The ngx_http_slice_module module (1.9.8) is a filter that splits a request into subrequests, each returning a certain range of response. The filter provides more effective caching of big responses.

This module is not built by default, it should be enabled with the --with-http_slice_module configuration parameter.

Example Configuration

location / {
    slice             1m;
    proxy_cache       cache;
    proxy_cache_key   $uri$is_args$args$slice_range;
    proxy_set_header  Range $slice_range;
    proxy_cache_valid 200 206 1h;
    proxy_pass        http://localhost:8000;

In this example, the response is split into 1-megabyte cacheable slices.


Syntax: slice size;
Default: slice 0;
Context: http, server, location

Sets the size of the slice. The zero value disables splitting responses into slices. Note that a too low value may result in excessive memory usage and opening a large number of files.

In order for a subrequest to return the required range, the $slice_range variable should be passed to the proxied server as the Range request header field. If caching is enabled, $slice_range should be added to the cache key and caching of responses with 206 status code should be enabled.

Embedded Variables

The ngx_http_slice_module module supports the following embedded variables:

the current slice range in HTTP byte range format, for example, bytes=0-1048575.

© 2002-2021 Igor Sysoev
© 2011-2021 Nginx, Inc.
Licensed under the BSD License.