Cucumber Kimchi (오이소박이)

Ingredients:

2 pounds kirby cucumbers (9 or 10 cucumbers) or 4 4½ inch long small, thin cucumbers.
2 tablespoons salt
1 cup buchu (Asian chives), chopped into ½ inch pieces
4 garlic cloves, minced
1 medium carrot, cut into thin matchsticks (about 1 cup)
1 cup onion, sliced thinly
½ cup hot pepper flakes
3 tablespoons fish sauce
1 tablespoon sugar
¼ cup water
1 tablespoon sesame seeds