I am learning player only but I play microstakes and I would fold to his shove. I play microstakes only for 2 weeks with my funny 15$ bankroll I made from starting bonuses and my game is leaky as hell, but one thing I learned in micros and from reading ton of things online is most players in micros are RRR and BRR (Rises aRe Real, Bets aRe Real). If I sit at the table longer I would call this shove only if vilain is notoric maniac-bluffer. There are too manny calling stations around who bet huge only if they hit something. I would suspect flush on there, maybe 222 or 333, as guys in micro often play things like A2 or K2 and sometimes even Q2 if they are really bored..... But I would put him on flush, as with set or trips micro-players usually put all-in right there on flop, they do not delay it to turn.

Btw. everybody knows it is hard to bluff in micros. I wouldn't read vilain shove as bluff, it is so rare in micros. Everybody knows you shouldnt bluff calling stations, and in micros there is so many players wanting to see showdown and you have been aggressive from the start. I wouldn't try to bluff much more passive players in micros than hero is. So with bluffs out of play and texture of board you beat only unconnected pocket-pairs and Jx starting hand, which is too narrow for my opinion to call AI.

Btw. tripple barrel is also questionable, because players take their hands too far in microstakes with the logic "I have put so many chips into the middle, I want to see that one more card". But it might work against some players (passive ones), so maybe here it was right move.

Btw. I am only learning newbie, so please tell me if more experienced of you don't agree with something I said, these are just my observations of micro-stakes so far.