測試環境

測試 step1 (預備data)

測試 step2 (執行)

測試結果第1次

User 659 got: 1
User 109 got: 2
User 652 got: 3
User 23 got: 5
User 460 got: 4
User 7 got: 6
User 42 got: 7
User 380 got: 9
User 220 got: 8
User 442 got: 10

測試結果第2次

User 364 got: 1
User 278 got: 4
User 4 got: 3
User 8 got: 2
User 195 got: 5
User 80 got: 6
User 87 got: 7
User 320 got: 8
User 463 got: 9
User 9 got: 10

測試結果第3次

User 914 got: 3
User 101 got: 2
User 3 got: 1
User 26 got: 4
User 2 got: 5
User 5 got: 7
User 556 got: 6
User 1010 got: 8
User 39 got: 9
User 76 got: 10

PS: sleep 或 thread 思路不在 User 搶買情境適用

僅改變 concurrency 方式,讓結果更像現實:

User 3806 got: 2
User 5460 got: 3
User 1328 got: 4
User 2556 got: 6
User 8513 got: 1
User 5359 got: 7
User 4854 got: 5
User 6404 got: 8
User 1261 got: 9
User 9231 got: 10

User 5782 got: 2
User 1400 got: 3
User 1624 got: 4
User 6232 got: 5
User 1202 got: 1
User 5126 got: 6
User 5203 got: 7
User 6684 got: 8
User 1318 got: 9
User 6891 got: 10

User 4842 got: 1
User 1617 got: 3
User 370 got: 4
User 629 got: 7
User 3750 got: 5
User 7622 got: 6
User 9102 got: 8
User 9512 got: 9
User 6459 got: 2
User 242 got: 10