Mercurial > hg > nginx
view auto/endianess @ 4385:70ba81827472
Cache locks initial implementation.
New directives: proxy_cache_lock on/off, proxy_cache_lock_timeout. With
proxy_cache_lock set to on, only one request will be allowed to go to
upstream for a particular cache item. Others will wait for a response
to appear in cache (or cache lock released) up to proxy_cache_lock_timeout.
Waiting requests will recheck if they have cached response ready (or are
allowed to run) every 500ms.
Note: we intentionally don't intercept NGX_DECLINED possibly returned by
ngx_http_file_cache_read(). This needs more work (possibly safe, but needs
further investigation). Anyway, it's exceptional situation.
Note: probably there should be a way to disable caching of responses
if there is already one request fetching resource to cache (without waiting
at all). Two possible ways include another cache lock option ("no_cache")
or using proxy_no_cache with some supplied variable.
Note: probably there should be a way to lock updating requests as well. For
now "proxy_cache_use_stale updating" is available.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 26 Dec 2011 11:15:23 +0000 |
parents | 694d285ec752 |
children | d620f497c50f |
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# Copyright (C) Igor Sysoev echo $ngx_n "checking for system endianess ...$ngx_c" echo >> $NGX_ERR echo "checking for system endianess" >> $NGX_ERR cat << END > $NGX_AUTOTEST.c int main() { int i = 0x11223344; char *p; p = (char *) &i; if (*p == 0x44) return 0; return 1; } END ngx_test="$CC $CC_TEST_FLAGS $CC_AUX_FLAGS \ -o $NGX_AUTOTEST $NGX_AUTOTEST.c $NGX_LD_OPT $ngx_feature_libs" eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&1" if [ -x $NGX_AUTOTEST ]; then if $NGX_AUTOTEST >/dev/null 2>&1; then echo " little endianess" have=NGX_HAVE_LITTLE_ENDIAN . auto/have else echo " big endianess" fi rm $NGX_AUTOTEST* else rm $NGX_AUTOTEST* echo echo "$0: error: can not detect system endianess" exit 1 fi