I consider that you already have Homebrew on your system.

Install Mysql

brew install mysql

• start mysql server

mysql.server start

• stop mysql server

mysql.server stop

Install Sphinx search with mysql support

By default, sphinx was configured without mysql support, to fix it, use the following command line :

brew install sphinx --mysql

•  start sphinx

searchd -c /usr/local/etc/sphinx.conf

• stop sphinx

searchd -c /usr/local/etc/sphinx.conf --stop

• manage your index

indexer -c /usr/local/etc/sphinx.conf --rotate yourindex
indexer -c /usr/local/etc/sphinx.conf --rotate yourindex_delta

• rotate your index in a cron

0 0 * * * /usr/bin/indexer --rotate yourindex >/dev/null 2>&0
0 */2 * * * /usr/bin/indexer --rotate yourindex_delta >/dev/null 2>&0

It rotates your main index every day at midnight and your delta every 2 hours.

When your first start searchd, your index doesn’t exist and you can see an error like this :

listening on 127.0.0.1:9312
 precaching index 'yourindex'
 WARNING: index 'yourindex': preload: failed to open /usr/local/var/data/yourindex.sph: No such file or directory; NOT SERVING
 precaching index 'yourindex_delta'
 WARNING: index 'yourindex_delta': preload: failed to open /usr/local/var/data/yourindex_delta.sph: No such file or directory; NOT SERVING
 FATAL: no valid indexes to serve

Running the indexer command will fix this error.

 Sphinx search with Tiny Tiny RSS configuration example

Tiny Tiny RSS is an open source web-based news feed (RSS/Atom) reader and aggregator, designed to allow you to read news from any location, while feeling as close to a real desktop application as possible.

• sphinx.conf

#############################################################################
## data source definition
#############################################################################

source ttrss
{
	type			= mysql # this is a MARIADB/MYSQL database
	sql_host		= localhost # this is your hostname, typically localhost
	sql_user		= ttrss # this is the ttrss_user name you defined 
	sql_pass		= ********** # this is the ttrss_user password you defined
	sql_db			= ttrss # this is the name of the ttrss MARIADB/MYSQL database
	sql_port		= 3306	# optional, default is 3306 for MARIADB/MYSQL
        sql_query_pre           = SET NAMES utf8


        sql_query               = \
		SELECT int_id AS id, ref_id, UNIX_TIMESTAMP(updated) AS updated, \
 			ttrss_entries.title AS title, link, content, \
                        ttrss_feeds.title AS feed_title, \
                        marked, published, unread, \
                        author, ttrss_user_entries.owner_uid \
                        FROM ttrss_entries, ttrss_user_entries, ttrss_feeds \
                        WHERE ref_id = ttrss_entries.id AND feed_id = ttrss_feeds.id;


	sql_attr_uint		= owner_uid 
	sql_attr_uint		= ref_id

	sql_ranged_throttle	= 0

	sql_query_info		= \
		SELECT * FROM ttrss_entries,  \
			ttrss_user_entries WHERE ref_id = id AND int_id=$id


}

source ttrss_delta : ttrss {

        sql_query		= \
                SELECT int_id AS id, ref_id, UNIX_TIMESTAMP(updated) AS updated, \
                        ttrss_entries.title AS title, link, content, \
                        ttrss_feeds.title AS feed_title, \
                        marked, published, unread, \
                        author, ttrss_user_entries.owner_uid \
                        FROM ttrss_entries, ttrss_user_entries, ttrss_feeds \
                        WHERE ref_id = ttrss_entries.id AND feed_id = ttrss_feeds.id \
                        AND ttrss_entries.updated > NOW() - INTERVAL 24 HOUR;

        sql_query_killlist      = \
		SELECT int_id FROM ttrss_entries, ttrss_user_entries \
                	WHERE ref_id = ttrss_entries.id AND updated > NOW() - INTERVAL 24 HOUR;


}

index ttrss
{
        source			= ttrss
	path			= /usr/local/var/data/ttrss # Distribution Dependant, VALIDATE
	docinfo			= extern
	mlock			= 0
	morphology		= none
	min_word_len		= 1
	charset_type		= utf-8
	min_prefix_len	        = 3
	prefix_fields		= title, content, feed_title, author
	enable_star		= 1
	html_strip		= 1

}

index ttrss_delta : ttrss {
	source			= ttrss_delta
	path			= /usr/local/var/data/ttrss_delta # Distribution Dependant, VALIDATE
}


indexer
{
	mem_limit		= 32M
}

#############################################################################
## searchd settings
#############################################################################

searchd
{
	log			= /usr/local/var/log/searchd.log
	query_log		= /usr/local/var/log/query.log
	read_timeout		= 5
	client_timeout		= 300
	max_children		= 30
	pid_file		= /usr/local/var/run/searchd.pid 
	max_matches		= 1000
	seamless_rotate		= 1
	preopen_indexes		= 1
	unlink_old		= 1
	mva_updates_pool	= 1M
	max_packet_size		= 8M
	max_filters		= 256
	max_filter_values	= 4096
	listen			= localhost
}
# --eof--