설치

http://pecl.php.net/package/APC

# tar xvfz APC-3.1.9.tgz
# cd APC-3.1.9
# /usr/local/php/bin/phpize
# ./configure --enable-apc --enable-apc-mmap --with-apxs --with-php-config=/usr/local/php/bin/php-config
# make && make install
Installing shared extensions: /usr/local/php/lib/php/extensions/no-debug-zts-20100525/ 
Installing header files: /usr/local/php/include/php/
# vi /usr/local/php/lib/php.ini
	extension="apc.so"
	apc.enabled=1
	apc.shm_segments=1
	apc.shm_size=128M ; 튜토리얼에는 128값을 권장하는데, M을 빠뜨리면 제 경우 쉬지않고 error_log 찍어냈습니다.
	apc.ttl=7200
	apc.user_ttl=7200
	apc.num_files_hint=1024
	apc.mmap_file_mask="/tmp/apc.XXXXXX"
	apc.enable_cli=1
# /usr/local/apache/bin/apachectl restart

XE 1.5에서 APC만을 위한 설정이 있지만 아직은 간혹 문제가 있습니다. (현재 Core 최신버전 1.5.2.2)

files/config/db.config.inc
	$db_info->use_object_cache = "apc";
	$db_info->use_template_cache = "apc";

관련문서

• Alternative PHP Cache
• PHP 가속 APC(Alternative PHP Cache), XCache 환경 구축