6 files changed, 54 insertions, 26 deletions
diff --git a/_articles/2020-10-10-feature-flags-differences-between-backend-frontent-and-mobile.md b/_articles/2020-10-12-feature-flags-differences-between-backend-frontent-and-mobile.md
index b655bfd..00d56f0 100644
--- a/_articles/2020-10-10-feature-flags-differences-between-backend-frontent-and-mobile.md
+++ b/_articles/2020-10-12-feature-flags-differences-between-backend-frontent-and-mobile.md
@@ -1,6 +1,6 @@
 ---
 title: "Feature flags: differences between backend, frontend and mobile"
-date: 2020-10-10
+date: 2020-10-12
 layout: post
 lang: en
 ref: feature-flags-differences-between-backend-frontent-and-mobile
@@ -8,7 +8,7 @@ category: presentation
 published: false
 ---
 
-*This article is derived from a [presentation]({% link _slides/2020-10-10-rollout-feature-flag-experiment-operational-toggle.slides %}).*
+*This article is derived from a [presentation]({% link _slides/2020-10-09-rollout-feature-flag-experiment-operational-toggle.slides %}).*
 
 When talking about [feature flags][feature-flags-article], I find that their
 costs and benefits weight differently when talking about backend, frontend and
diff --git a/_slides/2020-10-10-rollout-feature-flag-experiment-operational-toggle.slides b/_slides/2020-10-09-rollout-feature-flag-experiment-operational-toggle.slides
index cb374f4..7c78150 100644
--- a/_slides/2020-10-10-rollout-feature-flag-experiment-operational-toggle.slides
+++ b/_slides/2020-10-09-rollout-feature-flag-experiment-operational-toggle.slides
@@ -1,6 +1,6 @@
 ---
 title: Rollout, feature flag, experiment, operational toggle
-date: 2020-10-10
+date: 2020-10-09
 layout: slides
 lang: en
 ref: rollout-feature-flag-experiment-operational-toggle
@@ -104,6 +104,8 @@ Relevant as long as the new code is being developed
 
 Lives for as long as the code is in production.
 
+It feels like a system-level circuit breaker.
+
 ---
 
 We now know about the types
@@ -114,28 +116,28 @@ We now know about the types
 
 # backend
 
-1. **rollout**: k8s, blue/green, canary pipeline and `common-rollout`
+1. **rollout**: k8s blue/green, canary and `common-rollout`
 2. **feature flag**: `common-rollout` and datasets
-3. **operational toggle**: `common-rollout`
-4. **experiment**: `common-xp`
+3. **experiment**: `common-xp`
+4. **operational toggle**: `common-rollout`
 
 ???
 
-rollout: k8s, common-rollout
-
 This is a bit why common-rollout isn't called *common-feature-flag*: it was
-initially designed with backend usage of *rollouts* in mind.
+initially designed with backend usage of mostly *rollouts* in mind, and just a
+bit *feature flags*.
 
-feature flag:
+Avoid using configuration for doing operational toggles: it is less dynamic, so
+it defeats the purpose.
 
 ---
 
 # frontend
 
 1. **rollout**: CDN and page refreshes
-2. **feature flag**: percentages and maybe IPs (no `:customer/id` on [www.nubank.com.br](www.nubank.com.br))
-3. **operational toggle**: via dynamic backend control
-4. **experiment**: via dynamic backend control
+2. **feature flag**: percentages and maybe IPs (no `:customer/id` on the website)
+3. **experiment**: via dynamic backend control
+4. **operational toggle**: via dynamic backend control
 
 ---
 
@@ -143,8 +145,8 @@ feature flag:
 
 1. **rollout**: app stores
 2. **feature flag**: via dynamic backend control
-3. **operational toggle**: via dynamic backend control
-4. **experiment**: via dynamic backend control
+3. **experiment**: via dynamic backend control
+4. **operational toggle**: via dynamic backend control
 
 ---
 
@@ -193,13 +195,14 @@ But it is easy to fallback to "reload the page and try again".
 # Costs
 
 - more complex code
-- nested flags combine exponentially
+- compatibility with old app versions
+- nesting is exponential
 
 ---
 
 # Benefits
 
-- dynamically choose code paths for each customer
+- dynamicity
 
 ---
 
@@ -293,7 +296,7 @@ Use `:app-version` with `:min-version` instead
 
 # ***Always*** rely on a feature flag on the app
 
-Hotfixes and expedited releases is a thing of the past
+Hot fixes and expedited releases is a thing of the past
 
 ???
 
@@ -314,8 +317,8 @@ You should ask yourself:
 
 References:
 
-1. these slides: https://euandre.org/slides.html
-2. [prose version of this presentation]({% link _articles/2020-10-10-feature-flags-differences-between-backend-frontent-and-mobile.md %})
+1. these slides: [euandre.org/slides.html]({% link slides.md %})
+2. [prose version of this presentation]({% link _articles/2020-10-12-feature-flags-differences-between-backend-frontent-and-mobile.md %})
 3. ["Feature Toggles (aka Feature Flags)"](https://martinfowler.com/articles/feature-toggles.html),
  by Pete Hodgson
 4. [Continuous integration vs. continuous delivery vs. continuous deployment](https://www.atlassian.com/continuous-delivery/principles/continuous-integration-vs-delivery-vs-deployment),
diff --git a/scripts/assert-content.sh b/scripts/assert-content.sh
index e694580..626353c 100755
--- a/scripts/assert-content.sh
+++ b/scripts/assert-content.sh
@@ -8,7 +8,7 @@ red() { echo -e "${red}${1}${end}"; }
 
 ## Constant definitions
 
-jekyll build
+jekyll build --future
 JSON='_site/site.json'
 
 LANGS=(en pt fr)
@@ -63,6 +63,7 @@ assert-frontmatter() {
   F="$1"
   DESIRED_LAYOUT="$2"
   PREFIX="${3:-}"
+  EXTENSION="${4:-md}"
   LANG="$(get-lang "$F")"
   REF="$(get-ref "$F")"
   URL="$(get-url "$F")"
@@ -90,11 +91,10 @@ assert-frontmatter() {
   if [[ -n "${PREFIX}" ]]; then
     DATE="$(get-date "$F" | awk '{print $1}')"
     URL_BASENAME="$(basename "$(get-url "$F")")"
-    FILE="${PREFIX}/${DATE}-${URL_BASENAME%.html}.md"
+    FILE="${PREFIX}/${DATE}-${URL_BASENAME%.html}.${EXTENSION}"
 
     [[ -f "${FILE}" ]] || {
-      red "date/filename mismatch: '${FILE}' does not exist. To fix, run:"
-      echo "  mv '${PREFIX}/${URL_BASENAME%.html}.md' '${FILE}'"
+      red "date/filename mismatch: '${FILE}' does not exist."
       exit 1
     }
   fi
@@ -125,7 +125,7 @@ done
 
 echo Linting slides... >&2
 for slide in $(jq -r '.slides[] | @base64' "${JSON}"); do
-  assert-frontmatter "$slide" 'post' '_slides'
+  assert-frontmatter "$slide" 'slides' '_slides' 'slides'
 done
 
 echo Asserting unique refs... >&2
diff --git a/scripts/assert-spelling.sh b/scripts/assert-spelling.sh
index e7bd3b8..edc56dd 100755
--- a/scripts/assert-spelling.sh
+++ b/scripts/assert-spelling.sh
@@ -15,7 +15,7 @@ done
 
 OUT="$(mktemp)"
 shopt -s globstar
-jekyll build
+jekyll build --future
 for f in _site/**/*.html; do
   if ! grep -E '^_site/vendor/' <(echo "$f") > /dev/null; then
     l="$(head -n2 "$f" | tail -n1 | cut -d\" -f2)"
diff --git a/scripts/spelling/en.txt b/scripts/spelling/en.txt
index bebfc76..8a4f0d0 100644
--- a/scripts/spelling/en.txt
+++ b/scripts/spelling/en.txt
@@ -4,15 +4,19 @@ Slides
 aren
 autocommit
 backend
+barcode
 behaviour
+chargeback
 couldn
 cronjobs
 curation
 declaratively
 decrypting
 didn
+differentiator
 doesn
 duplications
+dynamicity
 embeddable
 filesystem
 filesystems
@@ -36,4 +40,5 @@ tradeoffs
 untrusted
 ve
 wasn
+whiteboarding
 wouldn
diff --git a/scripts/spelling/international.txt b/scripts/spelling/international.txt
index 12126cc..b56072c 100644
--- a/scripts/spelling/international.txt
+++ b/scripts/spelling/international.txt
@@ -15,6 +15,7 @@ BSON
 BY
 BY-SA
 Bitbucket
+CDN
 CI
 CLI
 Cantrill
@@ -27,22 +28,27 @@ F
 FFI
 FTS
 Fastmail
+Forsgren
 GADTs
 GPLv
 GPLv3
 GTK
 GitLab
 Gmail
+GoCD
 GuixSD
 HN
 HTTPS
 Halloway
 Haskell
+Hodgson
+IPs
 IndexedDB
 JS
 JSON
 Joyent
 L1
+LTS
 LaTeX
 Lerna
 LilyPond
@@ -56,6 +62,7 @@ Nextcloud
 NixOS
 POSIX
 Pastebin
+Pittet
 PouchDB
 README
 RPN
@@ -68,6 +75,7 @@ Sourcehut
 Spacemacs
 StackOverflow
 Staltz
+Sten
 TAB
 TBs
 TOML
@@ -79,7 +87,9 @@ WebAssembly
 Yandex
 YouTube
 Zig
+apk
 boneco
+br
 brainer
 buildGoModule
 cargo2nix
@@ -93,9 +103,11 @@ datoms
 dl
 edn
 en
+euandre
 euandreh
 eval
 fr
+frontend
 gcrypt
 gt
 guix
@@ -104,14 +116,17 @@ h1
 h6
 hinarioespirita
 html
+https
 i5
 i7
 ify
 intbytes
+ios
 ish
 jekyll
 jemoji
 js
+k8s
 kramdown
 libre
 lockfile
@@ -130,6 +145,8 @@ pastebins
 plaintext
 progn
 pt
+rollout
+rollouts
 sbcl
 songbooks
 sourcehut
@@ -137,7 +154,10 @@ sr
 swift2nix
 systemd
 touchpad
+txt
 v8
+www
+xp
 xyz
 youtube
 à