{"push_id":674508041,"size":1,"distinct_size":1,"ref":"refs/heads/master","head":"59c836985cc6537071f26de218f077b16b42b268","before":"5e742f8ca37b0734dc3ac0de54048f9b77d2fc25","commits":[{"sha":"59c836985cc6537071f26de218f077b16b42b268","author":{"email":"9cc42816b291c8cc3e1a12cc3eb605211172e5bf@gmail.com","name":"katzhang-ias"},"message":"added olap nosql and recursion notes","distinct":true,"url":"https://api.github.com/repos/katzhang/moocs/commits/59c836985cc6537071f26de218f077b16b42b268"}]}