Facebook users experienced a series of outages over a span of a few days last month. The world's most popular social networking service was inaccessible for several minutes at a stretch for users around the world three times between September 17 and September 29.
While users and experts have been wondering what could have led to the frequent Facebook issues, The Wall Street Journal reports that planned software changes had resulted in the three unexpected service outages.
Speaking to WSJ, Pedro Canahuati, Facebook's director of production engineering and site reliability, said that the three incidents were not directly linked to each other.
"In the last several weeks, we've fallen a bit short on our availability," Canahuati said. "Each unrelated issue began as a planned code change that had unintended consequences in our ability to respond to server requests."
Such a string of service issues is rare for Facebook.
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