2018 Recovery Projection for Companies That Raised Hundreds of Millions in 2014

Introducing The Startup's 2018 review of 100 companies that raised big rounds in 2014, and reacting to being on the unrecoverable list.

Stopped MAC Address Filtering Function

Why I turned off office Wi-Fi MAC address filtering after finding the security benefit didn't justify the maintenance cost.

[MongoDB] Search Conditions for Deeply Nested Fields

Why dot notation matches nested MongoDB fields but object-form conditions require an exact match.

docker rmi Command to Delete Docker Images

How to delete Docker Images with docker rmi and reclaim disk space, including dangling image cleanup.

[Node.js] How to Resolve Error: ENFILE: file table overflow, open xxx

Fixing Node.js's ENFILE: file table overflow on macOS by raising the file descriptor limit with launchctl plist files.

Using Google Spreadsheets for Q&A Management Almost Led to Collapse

Migrating cross-company Q&A management from Google Spreadsheets to GitHub Issues after it started to break.

Retirement-Driven Development (RDD)

Retirement-Driven Development: using a teammate's departure to convert tacit knowledge and drop busywork.

SSL/TLS 1.0 Must Be Disabled by June 30, 2018

A short reminder that SSL/TLS 1.0 must be disabled by June 30, 2018.

Setting up SSL with Let's Encrypt [CentOS + Nginx Edition]

Setting up a Let's Encrypt SSL certificate on CentOS + Nginx with certbot-auto.

yum upgrade from CentOS 6.6 to 6.9

Upgrading a server from CentOS 6.6 to 6.9 via yum, with before/after PHP and MySQL versions.

Upgrading Nginx Version with yum ~ CentOS 6

Steps to upgrade Nginx to a newer version with yum on CentOS 6.

How to Write crontab Considering Daylight Saving Time PST/PDT

A crontab notation example that accounts for PST/PDT daylight saving time shifts.

[Fluentd] The Origin of .pos File Name is Position

The Fluentd .pos file gets its name from 'position' — where the tail input last read to.

[MongoDB] How to Resolve Error: getMore: cursor didn't exist on server, possible restart or timeout?

Tuning indexes first, then falling back to the noTimeout cursor option to fix MongoDB's getMore cursor error.

IPO Salaries Typically Range from 4.2 to 5 Million Yen

A look at Mercari's and ZUU's 2018 securities reports and typical IPO-era salaries in Japan.

Checking Elasticsearch Index List

curl one-liners to list Elasticsearch indexes and to delete a specific index by name.

java.io.IOException: Missing root object specification in trailer Error with easy-pdf-merge

Working around a PDFBox bug in the easy-pdf-merge npm package by using a maintained fork.

Changed Evernote Paid Plan from Monthly to Annual Payment

Switched Evernote Plus from monthly to annual billing and saved about 1,220 yen a year.

Engineers/Programmers Will Eventually Become Cheap Labor

Notes on a book's prediction that engineering will commoditize, and what still matters in an AI-driven era.

Purchased a Used Office Chair for Remote Work Base

Picking up a used Okamura Adfit office chair for a remote work base via Office Busters.

301 Redirects After Web Service Closure are Good for SEO

How to handle 301 redirects after shutting down a web service, and why 3-6 months is enough from an SEO perspective.

[JavaScript] fast-safe-stringify is Convenient for Preventing TypeError: Converting circular structure to JSON

Use fast-safe-stringify to serialize circular references as [Circular] and avoid JSON.stringify TypeErrors.

npm Juice Converts CSS in style Tags to Inline Styles - Convenient for HTML Emails

A quick look at npm Juice for inlining CSS in HTML emails, plus an online converter and Gmail notes.

The Best Time for 1on1s is Thursday 3-5 PM

Why the book Yahoo's 1on1 recommends Thursday 3-5 PM as the best slot for 1on1 meetings.

Using MongoDB's findOneAndUpdate with Replica Set Awareness to Reduce Load on Primary DB

Prefixing findOneAndUpdate with a secondaryPreferred findOne to offload reads from the MongoDB primary.

Solution for No space left on device error ~ inode depletion edition

Tracking down a No space left on device error on Linux to inode depletion caused by wp-file-cache.

CDN Implementation Proposal

A CDN proposal covering the basics, trade-offs, and choosing between CloudFront and Fastly.

How to Remove WordPress Cache Plugin WP File Cache

How I deactivated and completely removed the WP File Cache plugin after it exhausted the server's inodes.

[Ionic] How to Clear Cache When Building for Android/iOS

How I recovered from Ionic + Cordova build failures by clearing the cache via platform remove / add.

PayPal RefundTransaction API cannot refund after 180 days from payment date

The PayPal RefundTransaction API cannot refund after 180 days — notes on workarounds with MassPay and DoNonReferencedCredit APIs.

Encounter with the Pomodoro Technique

How Rebuild.fm and the book SOFT SKILLS led me to finally try the Pomodoro Technique.

npm json2csv for converting JSON to CSV format is super convenient

A quick guide to converting JSON to CSV with npm json2csv, including sample code and why to avoid custom CSV.

How to specify TLS version with cURL

How to probe TLS 1.0 / 1.1 / 1.2 support individually using cURL's --tlsv1.x options.

Presented 'What We Practice for Continuous npm update' at We Are JavaScripters! @17th #wejs

My talk 'What We Practice for Continuous npm update' at the We Are JavaScripters! @17th meetup.

For Sakura Cloud and VPS CPU specifications, you have to check cpuinfo yourself

Sakura support won't share physical host CPU specs — you have to check /proc/cpuinfo yourself.

About AWS EC2 instance-specific network bandwidth and bandwidth guarantee

Measured per-instance EC2 network bandwidth references and confirmation that AWS does not guarantee it.

[npm] How to remove packages not in package.json from node_modules

A short memo on using npm prune to remove packages missing from package.json out of node_modules.

AWS EC2 instance selection meeting Wowza Streaming Engine minimum recommended specifications

Choosing AWS EC2 instance types that meet Wowza Streaming Engine's minimum recommended specifications.

[Nginx] Access restriction configuration to block specific IP addresses

Adding a deny directive inside a location block to block a specific IP address in Nginx.

[MongoDB] Query to find documents with specific ObjectId from all collections

A mongo shell snippet that scans every collection to locate a document when all you have is its ObjectId.

[JavaScript] Quick solution for URI malformed / malformed URI sequence errors

A quick try...catch workaround for the URIError raised by decodeURIComponent on invalid input.

[MongoDB] Index names can only be set up to a maximum of 127 bytes

Reproducing MongoDB's 127-byte index name limit with successful and failing createIndex calls.

[Git] Solution for fatal: unable to access: SSL certificate problem: Invalid certificate chain

A quick workaround for the Invalid certificate chain error by toggling `http.sslVerify`.

Solution for large /tmp/magick-xxx files created by ImageMagick and policy.xml configuration changes

Cleaning up massive /tmp/magick-xxx files and tuning ImageMagick's policy.xml resource limits.

[Linux] Commands to check CPU core count

How to check CPU core count and processor details on Linux with nproc, getconf, and /proc/cpuinfo.

Using cordova-plugin-safariviewcontroller with Ionic Framework

Sample code for opening external URLs with cordova-plugin-safariviewcontroller in Ionic Framework, with an InAppBrowser fallback.

[Ionic] How to use InAppBrowser to open URLs in default browser

Sample code for opening URLs in the device's default browser via Ionic's InAppBrowser using the '_system' target.

How to launch iOS apps in simulator with Ionic Framework

Build with ionic cordova build ios, open the .xcodeproj in Xcode, and run the app in the iOS Simulator.

Getting started with ionic start

The options I chose when creating an Ionic Framework project with ionic start — starter, Cordova, and Ionic Pro SDK.

Greenkeeper service that automatically runs npm update & creates pull requests is convenient

Setup notes for Greenkeeper, which opens automated npm update pull requests on your GitHub repositories.