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Show HN: Pogocache – Fast caching software

github.com
93 points·by tidwall·12 месяцев назад·29 comments

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tidwall
·3 месяца назад·discuss
Looks to me like having the ability to write Go syntax and interop directly with C is the plus.
tidwall
·3 месяца назад·discuss
"To keep things simple, there are no channels, goroutines, closures, or generics."

I wonder if it could be integrated with https://github.com/tidwall/neco, which has Go-like coroutines, channels, and synchronization methods.
tidwall
·4 месяца назад·discuss
I do this all the time. I’ll spend weeks or months on a project, with thousands of wip commits and various fragmented branches. When ready, I’ll squash it all into a single initial commit for public consumption.
tidwall
·6 месяцев назад·discuss
This reminds me of a card swiping video game system I made years ago.

https://youtu.be/Z2xq3ns5Hsk

https://github.com/tidwall/RetroSwiper
tidwall
·7 месяцев назад·discuss
Or this.

    func fetchUser(id int) (user User, err error) {
        resp, err := http.Get(fmt.Sprintf("https://api.example.com/users/%d", id))
        if err != nil {
            return user, err
        }
        defer resp.Body.Close()
        return user, json.NewDecoder(resp.Body).Decode(&user)
    }
tidwall
·9 месяцев назад·discuss
A bird in the hand.
tidwall
·12 месяцев назад·discuss
Thanks! The Pogocache sharded hashmap design is optimized for extremely low contention and good memory locality. It super rare for any two threads to ever wait on the same key. That's the biggest part and it's all in the src/pogocache.c file. But the network layer is finely tuned too.

Mostly I perfed and profiled ad nauseam, monitoring cpu cycles along the way. I found that keeping a focus on latency and cycles was primo, and the rest fell into place.
tidwall
·12 месяцев назад·discuss
Thanks!
tidwall
·12 месяцев назад·discuss
Like an ACL file?
tidwall
·12 месяцев назад·discuss
Thanks you for the blog post about TG when it came out.
tidwall
·12 месяцев назад·discuss
Glad to bring another one into this world.
tidwall
·12 месяцев назад·discuss
The protocols are autodetected. No need to carry multiple ports around.
tidwall
·12 месяцев назад·discuss
Oh wow. That is dope. Thanks for sharing.
tidwall
·12 месяцев назад·discuss
Thanks Steve. Your feedback was very helpful.
tidwall
·12 месяцев назад·discuss
No
tidwall
·12 месяцев назад·discuss
Yes, it is highly hand optimized. There's a description of some of the methods I used near the bottom of there README. I mainly focused on minimizing contention, with the sharded hashmap and such. But the networking layer is carefully crafted.
tidwall
·12 месяцев назад·discuss
Not intending to make pogocache into a sql database. I prefer keeping it a cache. More so exploring ways to work with existing databases such as sqlite, duckdb, postgres. Kinda like providing proxy-ish operations that transparently cache sql reads.
tidwall
·12 месяцев назад·discuss
That's the only way right now. The other ways I'm considering is with an environment variable and/or acl.
tidwall
·12 месяцев назад·discuss
I updated the graphs to use linear scaling. Thanks for the feedback
tidwall
·12 месяцев назад·discuss
Memcache binary protocol was deprecated years ago. It’s no longer recommended to be used.