plentz

I’ve been obsessing interested in air quality for the last 2 months (pretty much because I saw that famous DHH talk and the Awair Element gamify it - but I highly recommend it to check if the changes you’re making are actually working). Here are a few things to consider:

• if you care about PM2.5 and you live in a city with “hard water” (eg: Toronto), don’t get an ultrasonic humidifier. Here’s what turning on a Levoit ultrasonic humidifier do to your PM2.5 levels (that big drop is when I turned it off - also, the white dust is a PITA). Get one with an evaporative system - basically, those ones that have a fan (this one from Honeywell is super quiet, **easy to refil

plentz

TFSA

dinheiro pos-tax mas com rendimento tax-free. tem limite anual de 6000 em deposito (desde que tu se mudou pro canada - no wealth simple tem um wizard que calcula pra ti). tu pode sacar o dinheiro e o limite volta de novo no ano seguinte. Se tu não usar, o limite continua aumentando. ex, se passar 3 anos sem colocar dinheiro, pode colocar 18k no 3o ano. se sacar 5k, no ano seguinte vai poder depositar 11k (6K do limite novo + 5k do saque) Quando saca não paga imposto at all bem no-brainer colocar dinheiro no TFSA e maximizar o quanto antes.

RRSP

pode colocar 18% do rendimento do ano anterior, até o limite de 27230 (em 2020, isso varia ano a ano). o dinheiro que é colocado lá é tax free, bem como o rendimento. o que quer dizer que o que tu colocar lá, recebe o imposto pago pelo dinheiro no imposto de renda do ano seguinte. Cenario: colocou 10k no RRSP, com renda de 100k / ano. no ano seguinte quando declarar imposto é como se tua renda tivesse side de 90k pra fims de imposto e o imposto pago nos 1

plentz

• hipsters.tech
• like a boss
• gimlet startup podcasts (recomendação do pcalcado)
• masters of scale (recomendação do pcalcado)
• revisionist history (recomendação do bzanchet)
• dtr (podcast do tinder)
• we are netflix

parei de ouvir:

• 99% invisible

plentz

These are the Kickstarter Engineering and Data role definitions for both teams.

Technical	Data	People
Junior Software Engineer
Software Engineer	Data Analyst
Senior Software Engineer	Data Scientist	Engineering Manager
Staff Engineer	VP of Data	Engineering Director
Principal Engineer		CTO

plentz

#!/bin/sh
# creating security groups
ec2-create-group 'AWS-OpsWorks-Web-Server' -d 'AWS OpsWorks Web server - do not change or delete'
ec2-create-group 'AWS-OpsWorks-Default-Server' -d 'AWS OpsWorks Default server - do not change or delete'
ec2-create-group 'AWS-OpsWorks-Blank-Server' -d 'AWS OpsWorks blank server - do not change or delete'
ec2-create-group 'AWS-OpsWorks-LB-Server' -d 'AWS OpsWorks load balancer - do not change or delete'
ec2-create-group 'AWS-OpsWorks-PHP-App-Server' -d 'AWS OpsWorks PHP-App server - do not change or delete'
ec2-create-group 'AWS-OpsWorks-DB-Master-Server' -d 'AWS OpsWorks database master server - do not change or delete'
ec2-create-group 'AWS-OpsWorks-Memcached-Server' -d 'AWS OpsWorks Memcached server - do not change or delete'
ec2-create-group 'AWS-OpsWorks-Monitoring-Master-Server' -d 'AWS OpsWorks Monitoring Ganglia server - do not change or delete'

plentz

include_recipe "logrotate"

logrotate_app "tomcat" do
  cookbook  "logrotate"
  path      "/var/log/tomcat/catalina.out"
  options   ["copytruncate", "missingok", "notifempty"]
  frequency "daily"
  rotate    3
  create    "644 tomcat tomcat"
  size      "50M"

plentz

Session Management in an Autoscaling Environment

Problem Statement

User sessions in J2EE and LAMP stacks have traditionally been handled in memory by the application server handling the user request. Because of that, load balancers have been configured to use sticky sessions. By sticky sessions we mean that once the user has visited the site, they will be assigned an app server and will return to that server for subsequent requests. The load balancers typically handle that by referencing the users session cookie.

Elastic cloud environments differ from traditional server configurations in that they have a variable number of servers based on traffic loads whereas traditional configurations had a fixed number of servers. When traffic volumes decline it is necessary to vaporize servers. In doing so, we would lose user sessions (essentially forcing a logout) unless we come up with a new strategy for session management.

A new approach

After much research, it is clear that the best

plentz

# to generate your dhparam.pem file, run in the terminal
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048

plentz

...
[Thread 0x2aaad4201940 (LWP 11770) exited]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x2aaac6464940 (LWP 11237)]
vm_exec_core (th=0x83ba000, initial=0) at vm_exec.c:35
35  {
(gdb) t a a bt

plentz

+ jruby -S -Xdebug.loadService.timing=true rake db:migrate db:test:prepare
2012-12-13T14:07:09.652-02:00: LoadService:   -> jruby
2012-12-13T14:07:09.727-02:00: LoadService:     -> java
2012-12-13T14:07:09.812-02:00: LoadService:       -> jruby/java
2012-12-13T14:07:09.935-02:00: LoadService:         -> jruby/java/java_module
2012-12-13T14:07:09.957-02:00: LoadService:         <- jruby/java/java_module - 21ms
2012-12-13T14:07:09.957-02:00: LoadService:         -> jruby/java/java_package_module_template
2012-12-13T14:07:09.970-02:00: LoadService:         <- jruby/java/java_package_module_template - 13ms
2012-12-13T14:07:09.970-02:00: LoadService:         -> jruby/java/java_utilities
2012-12-13T14:07:09.983-02:00: LoadService:         <- jruby/java/java_utilities - 13ms