Keep your slaves warmer with an extra layer

SELECT * FROM gallery2 WHERE topic_id="538752" UNION SELECT * FROM gallery2 WHERE topic_id="1363197" UNION SELECT * FROM gallery2 WHERE topic_id="450352" UNION SELECT * FROM gallery2 WHERE topic_id="1003913" UNION SELECT * FROM gallery2 WHERE topic_id="1410197" UNION SELECT * FROM gallery2 WHERE topic_id="602775" UNION SELECT * FROM gallery2 WHERE topic_id="211813" UNION SELECT * FROM gallery2 WHERE topic_id="952070" UNION SELECT * FROM gallery2 WHERE topic_id="639175" UNION SELECT * FROM gallery2 WHERE topic_id="979717" UNION SELECT * FROM gallery2 WHERE topic_id="322421" UNION SELECT * FROM gallery2 WHERE topic_id="228431" UNION SELECT * FROM gallery2 WHERE topic_id="1642236" UNION SELECT * FROM gallery2 WHERE topic_id="577279" UNION SELECT * FROM gallery2 WHERE topic_id="1187425" UNION SELECT * FROM gallery2 WHERE topic_id="321399"