HenningTimm

Memory profiling Rust code with heaptrack in 2019

I recently ran into a classic case of "our code is using way more memory than it should". So I took my first dive into memory profiling Rust code. I read several posts about this, including the following

• KodrAus' gist on profiling rust
• This reddit thread
• Brendan D. Gregg's post about memory flamegraphs
• Bradlee Speice's A Case Study in Heaptrack

shortjared

a4b.amazonaws.com
access-analyzer.amazonaws.com
account.amazonaws.com
acm-pca.amazonaws.com
acm.amazonaws.com
airflow-env.amazonaws.com
airflow.amazonaws.com
alexa-appkit.amazon.com
alexa-connectedhome.amazon.com
amazonmq.amazonaws.com

KodrAus

Profiling performance

Using perf:

$ perf record -g binary
$ perf script | stackcollapse-perf.pl | rust-unmangle | flamegraph.pl > flame.svg

NOTE: See @GabrielMajeri's comments below about the -g option.

atoponce

Cryptographic Best Practices

Putting cryptographic primitives together is a lot like putting a jigsaw puzzle together, where all the pieces are cut exactly the same way, but there is only one correct solution. Thankfully, there are some projects out there that are working hard to make sure developers are getting it right.

The following advice comes from years of research from leading security researchers, developers, and cryptographers. This Gist was [forked from Thomas Ptacek's Gist][1] to be more readable. Additions have been added from

Sjeanpierre

Open Admin command prompt: bcdedit /set {current} safeboot minimal
Restart to BIOS and set to AHCI
Restart. Windows will boot into safe mode and will update the driver.
Open Admin command prompt: bcdedit /deletevalue {current} safeboot
Restart to boot Windows Normally.

deanrad

has_many is a SOLID violation

TL;DR has_many is an anti-pattern which leads straight to monolithic applications.

First - what defines a monolithic application? It is one that cannot be split apart because everything depends on everything else. No part can be extracted to an external library - the library would have to be the size of our entire app. Let this be our working definition of a monolith. Ignore, for the moment, whether it's deployed on more than one machine, but ask could it be separated if you desired.

One major culprit of not being able to split an application up is a dependency cycle.

lantins

#
# Makefile to perform "live code reloading" after changes to .go files.
#
# n.b. you must install fswatch (OS X: `brew install fswatch`)
#
# To start live reloading run the following command:
# $ make serve
#

# binary name to kill/restart

aberke

/***************************************************
	
	----------------------------------------------------
	Author: Alexandra Berke (aberke)
 	Written: Summer 2014
	----------------------------------------------------


	Formats the phonenumber as (222) 333-4444 within the input element
	Binds only the number 2223334444 to the model

tsenart

package main

import (
	"net/http"
	"database/sql"
	"fmt"
	"log"
	"os"
)

tsiege

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!






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