daniele_dll

5 ms·

1.
by daniele_dll 1mo ago
Thank you! I worked super hard to keep the token usage as low as possible. It's also possible to drive mobile browsers via the MCP, although I really tested only chrome, I have done a bunch of optimization for token usage also on that
2.
Show HN: MCP app for Android, drive apps via AI (no root, PII redacted locally)(github.com)
6 points by daniele_dll 1mo ago|2 comments
3.
by daniele_dll 6mo ago
Well if you check the screenshot you will notice that LinkedIn was using about 10x more memory for a few tabs ;) The most insane one is at +15GB lol I felt "reductive" reading that LinkedIn was using <3GB for 2 tabs given my ex
4.
by daniele_dll 6mo ago
I posted because I saw that a few days ago but 2.4GB felt "reductive" considering what I experienced on my machine ;)
5.
LinkedIn uses 65GB of RAM with 7 tabs opened
15 points by daniele_dll 6mo ago|9 comments
6.
by daniele_dll 1y ago
It's always nice to see someone discovering that mmap is not built for performance but for easyness of data-on-disk management with reasonable speed.
7.
by daniele_dll 3y ago
Meet Cachegrand, an open-source (BSD licensed) Redis-compatible key-value store designed for speed. Our latest release offers significant improvements, allowing you to use Cachegrand in environments without clustering, while still maximizin
8.
Show HN: Cachegrand, a fast Redis-compatible KV-store, v0.2.1 released(cachegrand.io)
12 points by daniele_dll 3y ago|1 comments
9.
by daniele_dll 4y ago
This is a valid reason, but makes sense for code bases where the generation takes tens of minutes or more not seconds.
10.
by daniele_dll 4y ago
Importing a C file into a Python session is a practice that can ---easily--- cause ---a lot--- of headaches, the packages required to build the code as python library and make it importable will vary between systems and make it hard to debu
11.
by daniele_dll 4y ago
Fully agree with the principle but maybe let's not call Redis "well-written" :) Redis is a great piece of software because of how much it impacted the "evolution" of Internet not because of the code quality, Redis&#
12.
Cachegrand, a fast, Redis compatible, KV store – hashtable documentation(github.com)
3 points by daniele_dll 4y ago|1 comments
13.
by daniele_dll 4y ago
Curious to discover how the hastable implemented in cachegrand ( https://github.com/danielealbano/cachegrand ) - my opensource Redis compatible Key-Value store - can deliver up to 112 million GET op/s and up to 85
14.
by daniele_dll 4y ago
I am empathetic as well but... Let me start saying that no one prevents a company from selling the software with licenses allowing to access the source code, companies even provide the code under the GPL because the BSD or the GPL nowhere s
15.
by daniele_dll 4y ago
It's definitely not entirely true, the license grants that "the current version" under "the current license" will be under the Apache license in 5 years that translates to in 5 years dragonflydb 0.6.0 / 0.7.0 w
16.
by daniele_dll 4y ago
Thanks! I also promise to document more the actual inner workings of the various components, I have some scattered documentation here and there which will help me in the task!
17.
by daniele_dll 4y ago
I replied in a few posts in the thread with some details, if you want more there is also this presentation I did at the London performance summit https://www.youtube.com/watch?v=ZSpxuWQK7sM Most of the performance exploits
18.
by daniele_dll 4y ago
Please don't confuse free source with open source, there is quite a massive difference. There is a reason for which the BSL is not a recognized open source license.
19.
by daniele_dll 4y ago
It is early stage in the sense it only support commands that operate on the strings and some on the key space. Other commands are planned to be added soon but the ones already implemented cover already a lot of different use cases.
20.
by daniele_dll 4y ago
Let me answer and then give you some background for my question. > Which says you estimate 50-100 machines to saturate one "low-core count VM" Redis. But now you say you meant 50-100 machines for Redis servers? No, I was referr
21.
by daniele_dll 4y ago
In case you are interested, here there is a presentation I did for London Performance Summit https://www.youtube.com/watch?v=ZSpxuWQK7sM For the hashtable part you can jump to minute 8.40. This year I will present my effort
22.
by daniele_dll 4y ago
Yes, I was planning to bring it in after a few releases and focus on more commands right now but I was asked to make it more production ready so the next release I will bring in: - Active-Active replication - memory control (with key evicti
23.
by daniele_dll 4y ago
Absolutely, I was planning to introduce the Active-Active replication in a few releases but I changed the plan to do it for the v0.2, together with a memory control and an LRU to evict keys if it's necessary to free up memory, with RDB
24.
by daniele_dll 4y ago
A bit from everything: the hashtable leverages the CPU caches and the cachelines, it also uses SIMD instructions to search very quickly the hash, once a bucket in the hashtable is identified, only the relevant bits in the hash are compared,
25.
by daniele_dll 4y ago
Currently both, the TSDB is a PoC right now. The timeseries will depend on the keys, as it's the historical sequence of values, so it will be replicated and merged on the nodes that own that specific key in active-active replication wi
26.
by daniele_dll 4y ago
That comment doesn't really apply to cachegrand and the benchmarks shared on the project page, cachegrand can run in single thread mode and there is a benchmark for that as well (the first column of the chart). But honestly, performanc
27.
by daniele_dll 4y ago
If I might ask, as I guess from your comments you are using Redis or a compatible platform, which are your numbers? Specifically I am referring to number of servers / vms for Redis, total core count, total memory available, total memor
28.
by daniele_dll 4y ago
Very good point but currently cachegrand doesn't have an interface for memcache, although probably would take about 1 week to implement it. In general I am pretty sure cachegrand would be faster than memcache easily but I will add it t
29.
by daniele_dll 4y ago
I would love to sit and write more documentation but I am doing this work during the night and/or over the weekends so sorry for not having it but I promise I will slowly slowly start to put together something more than a "TODO&qu
30.
by daniele_dll 4y ago
ahahahahha, that's definitely true, quite similar to Valgrind tooling :D

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