feat: add ThumbUP 项目 — 70 questions across 5 subtopics (cache-protection, two-level-cache, lua-bucketing-sync, heavykeeper-topk, distributed-lock)

2026-09-09 21:59:46 +08:00
parent 3447dbd4ee
commit 85710ded73
21 changed files with 2222 additions and 0 deletions
@@ -442,6 +442,83 @@
          }
        }
      ]
+    },
+    {
+      "slug": "thumbup",
+      "name": "ThumbUP 项目",
+      "description": "高并发点赞系统技术调研：缓存穿透防护、二级缓存、Lua原子性、HeavyKeeper热点探测、分布式锁",
+      "subtopics": [
+        {
+          "slug": "cache-protection",
+          "name": "缓存穿透与击穿防护",
+          "description": "布隆过滤器、空值短缓存、互斥锁防击穿的三重防护机制",
+          "path": "topics/thumbup/cache-protection",
+          "stats": {
+            "total": 14,
+            "by_type": {
+              "single_choice": 8,
+              "code_reading": 3,
+              "short_answer": 3
+            }
+          }
+        },
+        {
+          "slug": "two-level-cache",
+          "name": "Caffeine + Redis 二级缓存",
+          "description": "CacheManager 二级缓存架构、HeavyKeeper 热Key探测、putIfPresent 写一致性",
+          "path": "topics/thumbup/two-level-cache",
+          "stats": {
+            "total": 14,
+            "by_type": {
+              "single_choice": 8,
+              "code_reading": 3,
+              "short_answer": 3
+            }
+          }
+        },
+        {
+          "slug": "lua-bucketing-sync",
+          "name": "Lua 脚本 + 分桶同步",
+          "description": "Lua脚本原子性、10秒时间片分桶、定时批量落库、补偿兜底",
+          "path": "topics/thumbup/lua-bucketing-sync",
+          "stats": {
+            "total": 14,
+            "by_type": {
+              "single_choice": 8,
+              "code_reading": 3,
+              "short_answer": 3
+            }
+          }
+        },
+        {
+          "slug": "heavykeeper-topk",
+          "name": "HeavyKeeper Top-K 探测",
+          "description": "HeavyKeeper算法原理、指数衰减、vs CMS对比、Top-K堆管理",
+          "path": "topics/thumbup/heavykeeper-topk",
+          "stats": {
+            "total": 14,
+            "by_type": {
+              "single_choice": 8,
+              "code_reading": 3,
+              "short_answer": 3
+            }
+          }
+        },
+        {
+          "slug": "distributed-lock",
+          "name": "单机锁与分布式锁",
+          "description": "synchronized到Redis SETNX演进、Lua脚本释放锁、锁续期问题",
+          "path": "topics/thumbup/distributed-lock",
+          "stats": {
+            "total": 14,
+            "by_type": {
+              "single_choice": 8,
+              "code_reading": 3,
+              "short_answer": 3
+            }
+          }
+        }
+      ]
    }
  ]
 }