ivanitskiy

Running ARM64 Debian on MAC OS (13.6) with qemu

# install qemu

brew install qemu
qemu-system-aarch64 --version

mkdir aarm64

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# Add apt.llvm.org repository and install clang
wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key|sudo apt-key add -
sudo apt-add-repository "deb http://apt.llvm.org/stretch/ llvm-toolchain-stretch main"
sudo apt-get update
sudo apt-get install -y clang clang-format clang-tidy lldb libc++-8-dev libc++abi-8-dev

# Check version
clang --version
clang++ --version

ivanitskiy

{
  "extends": [
    "eslint:recommended",
    "plugin:@typescript-eslint/recommended",
    "plugin:prettier/recommended"
  ],
  "ignorePatterns": ["**/node_modules/", "/dist/", "/lib/"],
  "parserOptions": {
    "sourceType": "module"
  },

ivanitskiy

How to setup your own CA with OpenSSL

For educational reasons I've decided to create my own CA. Here is what I learned.

First things first

Lets get some context first.

ivanitskiy

[package]
name = "clumpctrl"
version = "0.1.0"
authors = ["Maxim Ivanitskiy <m.ivanitskiy@f5.com>"]
edition = "2018"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
rocket = "0.4.4"

ivanitskiy


https://www.slideshare.net/ConfluentInc/connecting-kafka-across-multiple-aws-vpcs

https://dvirgiln.github.io/exposing-kafka-throw-different-aws-vpcs/

https://dvirgiln.github.io/exposing-kafka-throw-different-aws-vpcs/


ivanitskiy

# The command finds the most recent tag that is reachable from a commit.
# If the tag points to the commit, then only the tag is shown.
# Otherwise, it suffixes the tag name with the number of additional commits on top of the tagged object 
# and the abbreviated object name of the most recent commit.
git describe

# With --abbrev set to 0, the command can be used to find the closest tagname without any suffix:
git describe --abbrev=0

# other examples

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SQL=$(cat <<EOF
SELECT 
	id, DATE_FORMAT(created_at, "%Y-%m-%d"),  
	type, user_id, location_id, UNIX_TIMESTAMP(created_at) 
FROM hits
EOF
)
mysql -h source_db_host mydb -BNe "$sql" > hist.txt
cat hist.txt | clickhouse-client -d mydb --query="INSERT INTO hits FORMAT TabSeparated"

ivanitskiy

Internet Scale Services Checklist

A checklist for designing and developing internet scale services, inspired by James Hamilton's 2007 paper "On Desgining and Deploying Internet-Scale Services."

• http://mvdirona.com/jrh/talksandpapers/jamesrh_lisa.pdf

Basic tenets

• Does the design expect failures to happen regularly and handle them gracefully?
• Have we kept things as simple as possible?

ivanitskiy

package main

import (
  "fmt"
  "reflect"
  "regexp"
  "strings"
)

// Name of the struct tag used in examples.