An in-memory cache library for golang. support: lru,lfu,hash-lru,hash-lfu,arc. 一个高性能本地内存缓存,带有各种内存淘汰算法 - toolsetlink/mcache
GCache coordinates cache fills such that only one load in one process of an entire replicated set of processes populates the cache, then multiplexes the loaded value to all callers. Expirable cache func main() { // LRU cache, size: 10, expiration: after a hour gc := gcache.New(10)....
Golang:go-cache基于内存的键值存储缓存库,Anin-memorykey:valuestore/cache(similartoMemcached)libraryforGo,suitableforsingle-machineapplications.译文:Go的内存key:valuestore/cache(类似于Memcached)库,适用于单机应用程序。文档https://pkg.go.dev/gi
we intend to use memcache for the time being. If the gc ends up addressing this, it should be fairly trivial to switch to an in-memory row cache 就不翻译了。简单来讲,vitess的作者也认为进程内的cache是更好的方案,由于当前golang的gc实现还不够理想, 所以选择了memcache。另外这里有篇文章分享了...
geocache- An in-memory cache that is suitable for geolocation based applications.适用于 地理位置...
pad的作用是确保每个mcentral之间相隔CacheLinePadSize个字节,这样每个mcentral.lock都能独占一个缓存行,减少多核环境下的缓存行争用。 heapArena heapArena 是用来描述 arena 的结构体 type heapArena struct { 。。。 bitmap [heapArenaBitmapBytes]byte spans [pagesPerArena]*mspan 。。。 } bitmap: 用于...
npages uintptr // number of pages in span nelems uintptr // number of object in the span. allocCache uint64 allocBits *gcBits //bitmap gcmarkBits *gcBits //bitmap baseMask uint16 // if non-0, elemsize is a power of 2, & this will get object allocation base ...
当用户程序或者线程向 runtime.mspan 申请内存时,它会使用 allocCache 字段以对象为单位在管理的内存中快速查找待分配的空间: 如果我们能在内存中找到空闲的内存单元会直接返回。如果找不到,上一级的组件 runtime.mcache 会为调用 runtime.mcache.refill 更新内存管理单元以满足为更多对象分配内存的需求。
To serialize access, protect the data with channel operations or other synchronization primitives such as those in the sync and sync/atomic packages. 译文: 简单的说就是:Go内存模型限定了一些条件 满足这些条件 才能让变量 安全地在不同的goroutine之间读写。换句话说就是如何保证在一个 goroutine中看到在...
$ go tool pprof http://127.0.0.1:6060/debug/pprof/profile?seconds=30Saved profilein/root/pprof/pprof.demo.samples.CPU.001.pb.gzFile:demoType:CPUTime:Dec24,2023at11:42am(CST)Duration:10s,Total samples=70ms(0.7%)Entering interactivemode(type"help"forcommands,"o"foroptions)(pprof) ...