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#
# Building V8 for alpine is a real pain. We have to compile from source, because it has to be
# linked against musl, and we also have to recompile some of the build tools as the official
# build workflow tends to assume glibc by including vendored tools that link against it.
#
# The general strategy is this:
#
#   1. Build GN for alpine (this is a build dependency) 
#   2. Use depot_tools to fetch the V8 source and dependencies (needs glibc)
#   3. Build V8 for alpine

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Benchmark commands

Producer

Setup

bin/kafka-topics.sh \
  --zookeeper zookeeper.example.com:2181 \
  --create \

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https://stackoverflow.com/questions/64369622/using-sample-in-clickhouse-seems-to-read-all-rows-and-more-bytes-is-this-expect

CREATE TABLE table_one
( timestamp UInt64,
  transaction_id UInt64,
  banner_id UInt16,
  value UInt32
)
ENGINE = MergeTree()
PARTITION BY toYYYYMMDD(toDateTime(timestamp))

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diff --git a/programs/server/config.xml b/programs/server/config.xml
index 851a7654d5..ac7b2510b1 100644
--- a/programs/server/config.xml
+++ b/programs/server/config.xml
@@ -123,7 +123,7 @@
     <!-- Listen specified host. use :: (wildcard IPv6 address), if you want to accept connections both with IPv4 and IPv6 from everywhere. -->
     <!-- <listen_host>::</listen_host> -->
     <!-- Same for hosts with disabled ipv6: -->
-    <!-- <listen_host>0.0.0.0</listen_host> -->
+    <listen_host>0.0.0.0</listen_host>

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Effective Modern CMake

Getting Started

For a brief user-level introduction to CMake, watch C++ Weekly, Episode 78, Intro to CMake by Jason Turner. LLVM’s CMake Primer provides a good high-level introduction to the CMake syntax. Go read it now.

After that, watch Mathieu Ropert’s CppCon 2017 talk Using Modern CMake Patterns to Enforce a Good Modular Design (slides). It provides a thorough explanation of what modern CMake is and why it is so much better than “old school” CMake. The modular design ideas in this talk are based on the book [Large-Scale C++ Software Design](https://www.amazon.de/Large-Scale-Soft

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sudo yum install numactl-devel
wget https://fast.dpdk.org/rel/dpdk-17.11.2.tar.xz
cd dpdk-stable-17.11.2/
make config T=x86_64-native-linuxapp-gcc
make
sudo modprobe uio
sudo insmod /home/ec2-user/dpdk-stable-17.11.2/build/kmod/igb_uio.ko
sudo yum install pciutils
sudo vi /etc/sysctl.conf vm.nr_hugepages = 1024
sudo sysctl -p

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Building Kafka from the Hardware - up

• Higher Message Retention ? - Increase disk size
• Higher Message Throughput ? - Increase network capacity
• Higher Producer Performance ? - Increase Disk I/O speed
• Higher Consumer Performance ? - Increase Memory

Critical Configurations (Consumer)

• queued.min.messages
• fetch.wait.max.ms
• socket.blocking.max.ms

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Moved to git repository: https://github.com/denji/golang-tls

Generate private key (.key)

# Key considerations for algorithm "RSA" ≥ 2048-bit
openssl genrsa -out server.key 2048

# Key considerations for algorithm "ECDSA" ≥ secp384r1
# List ECDSA the supported curves (openssl ecparam -list_curves)

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#include <errno.h>
#include <string.h>

#include <iostream>
#include <sys/types.h>        /* See NOTES */
#include <sys/socket.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

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package main

import (
	"crypto/tls"
	"crypto/x509"
	"flag"
	"io"
	"io/ioutil"
	"log"
	"os"