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For a long time I've been really impacted by the ease of use Cassandra and CockroachDB bring to operating a data store at scale. While these systems have very different tradeoffs what they have in common is how easy it is to deploy and operate a cluster. I have experience with them with cluster sizes in the dozens, hundreds, or even thousands of nodes and in comparison to some other clustered technologies they get you far pretty fast. They have sane defaults that provide scale and high availability to people that wouldn't always understand how to achieve it with more complex systems. People can get pretty far before they have to become experts. When you start needing more extreme usage you will need to become an expert of the system just like any other piece of infrastructure. But what I really love about these systems is it makes geo-aware data placement, GDPR concerns potentially simplified and data replication and movement a breeze most of the time.

Several years ago the great [Andy Gross](ht

typeswitch-dev / daiyon.c
Last active Jul 3, 2022
第四 (Daiyon) — a Japanese & Forth inspired postfix language
View daiyon.c
#include <stdio.h>
#include <string.h>
#include <assert.h>
FILE *in; long M[1<<24]={0}, *D, *R, H=0x130000, IP=0, T;
long getu() { long t, h = getc(in); if (h < 0xC0) return h;
t = ((h&0x1F) << 6) | (getc(in) & 0x3F); if (h < 0xE0) return t;
t = ( t << 6) | (getc(in) & 0x3F); if (h < 0xF0) return t;
t = ( t << 6) | (getc(in) & 0x3F); return t & 0x1FFFFF; }
void putu(long c) { if (c < 0x80) { putchar(c); return; }
if (c < 0x7FF) { putchar(0xC0|(c>>6)); } else {


This is the story of what happened when I went down a rabbit hole.

It starts with k7. If you press Ctrl-] in the k7 WASM console, this appears:


That's a prime number filter. There are faster ones -'s x,1_&&/80#'!:'x is beautiful - but this one is really short.

akihikodaki /
Last active Jan 19, 2023
Linux Desktop on Apple Silicon in Practice

Linux Desktop on Apple Silicon in Practice

I bought M1 MacBook Air. It is the fastest computer I have, and I have been a GNOME/GNU/Linux user for long time. It is obvious conclusion that I need practical Linux desktop environment on Apple Silicon.

Fortunately, Linux already works on Apple Silicon/M1. But how practical is it?

  • Two native ports exist.
palewire /
Last active Jan 19, 2023
A command-line interface for running Jupyter Notebooks.
# -*- coding: utf-8 -*-
A command-line interface for running Jupyter Notebooks.
Executes Jupyter Notebooks from the command line.
Expects one or more file paths input as arguments.
PARC6502 /
Last active Jan 26, 2023
List of open source, self hosted BaaS - Backend as a service

Supabase - ~39K stars

  • Designed explicitly as an open source firebase alternative
  • Typescript based
  • Docker support

Parse Server - ~19K stars

  • JavaScript based
  • MongoDB or PostgreSQL
  • Has dockerfile
tpogden /
Last active Jan 19, 2023
Run a Set of Jupyter Notebooks from the Command Line
# ! python
# coding: utf-8
import os
import argparse
import glob
import nbformat
from nbconvert.preprocessors import ExecutePreprocessor
from nbconvert.preprocessors.execute import CellExecutionError

Meltdown fix impact on Redis performances in virtualized environments

UPDATE: apparently kernel difference may have a serious impact, so I'll redo the test from scratch.

Test performed with AOF enabled, fsync policy 1 second, allowing the rewrites to be triggered.

Command lines used:

BusFactor1Inc / scheme-coin.lisp
Created Dec 16, 2017
A Common Lisp Blockchain - Scheme Coin
View scheme-coin.lisp
;; scheme coin - a common lisp blockchain
;; Burton Samograd
;; 2017
(load "~/quicklisp/setup.lisp")
(defconstant *coin-name* "Scheme Coin")
chrisdone / Printf.idr
Last active Jan 25, 2023
Type-safe dependently-typed printf in Idris
View Printf.idr
module Printf
%default total
-- Formatting AST.
data Format
= FInt Format
| FString Format
| FOther Char Format
| FEnd