Mercurial > mooncached / file comparison
comparison: util/memcache.lua
util/memcache.lua
- changeset 19
- 61c4d7f8279c
- parent 17
- 5bede08f2f55
equal
deleted
inserted
replaced
| 18:d4822ae9d901 | 19:61c4d7f8279c |
|---|---|
| 46 function cache:get(key) | 46 function cache:get(key) |
| 47 local expires = _expiry[key]; | 47 local expires = _expiry[key]; |
| 48 if expires and expires < now() then | 48 if expires and expires < now() then |
| 49 self:delete(key); | 49 self:delete(key); |
| 50 end | 50 end |
| 51 return _flags[key], _data[key]; | 51 return _flags[key], tostring(_data[key]); |
| 52 end | 52 end |
| 53 | 53 |
| 54 function cache:delete(key, time) | 54 function cache:delete(key, time) |
| 55 local existed = _data[key]; | 55 local existed = _data[key]; |
| 56 _flags[key], _data[key], _expiry[key] = nil, nil, nil; | 56 _flags[key], _data[key], _expiry[key] = nil, nil, nil; |
| 61 _deleted[key] = time; | 61 _deleted[key] = time; |
| 62 end | 62 end |
| 63 return true, existed; | 63 return true, existed; |
| 64 end | 64 end |
| 65 | 65 |
| 66 function cache:incr(key, amount) | |
| 67 local current_value = tonumber((select(2, self:get(key)))) or 0; | |
| 68 local new_value = (current_value + amount)%4294967296; | |
| 69 local ok, err = cache:set(key, 0, 0, new_value); | |
| 70 if not ok then | |
| 71 return ok, err; | |
| 72 end | |
| 73 return ok, new_value; | |
| 74 end | |
| 75 | |
| 76 function cache:decr(key, amount) | |
| 77 local current_value = tonumber((select(2, self:get(key)))) or 0; | |
| 78 local new_value = math.max(0, current_value - amount); | |
| 79 local ok, err = cache:set(key, 0, 0, new_value); | |
| 80 if not ok then | |
| 81 return ok, err; | |
| 82 end | |
| 83 return ok, new_value; | |
| 84 end | |
| 85 | |
| 66 return cache; | 86 return cache; |
| 67 end | 87 end |
| 68 | 88 |
| 69 return _M; | 89 return _M; |
