There is a table with compound key:
t_count + pageType VARCHAR(32) ascii_bin + pageId VARCHAR(255) utf8_bin + count INT PRIMARY(pageType, pageId)
Its purpose is to track how many times each page uniquely defined by ((pageType, pageId) has been viewed. So a query should either insert a new row or increment count on the existing one. How to do it in an effective manner in MySQL?
The table will be updated from multiple concurrent threads serving pages for different clients. So the effectiveness is measured in low to no locking and the ability of the query design to operate in highly concurrent environment.
Database version is:
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