Using systemd-tmpfiles to manage temporary files and directories (2 mins read).
How I'm using systemd-tmpfiles to manage a temporary working directory and automagically clean it out.
Should That (Secret) Thing Be In Your Querystring? (2 mins read).
Why you should be very cautious about putting potentially sensitive values into the querystring of web APIs.
by 
Jamie Tanna
.
#api
#security.
Owning my Hashtags (2 mins read).
Why I decided to treat hashtags in my (syndicated) content as tags on my site.
by Jamie Tanna
.
#indieweb.
Extracting the Default Private / Secret Keys from OpenAM/Forgerock AM (2 mins read).
How to retrieve the contents of the private or secret keys from an OpenAM/Forgerock AM installation.
Converting an Image to a Base64 data URL with Node.JS (1 mins read).
How to convert an image to a data URL using Node.JS on the command-line.
Appending Values to a Querystring with Ruby (1 mins read).
How to append a query parameter to a URL's querystring in Ruby.
by Jamie Tanna
.
#blogumentation
#ruby.
Making Zoom Notifications/Windows Float on BSPWM (1 mins read).
How to get BSPWM to handle Zoom notification windows as floating windows, instead of tiles.
Automagically Assuming AWS Roles for EC2/ECS (1 mins read).
How to set up your AWS infrastructure to automagically assume IAM roles.
by Jamie Tanna
.
#blogumentation
#aws.
Reducing Risk of Supply Chain Attacks with Reproducible Builds in Gradle (1 mins read).
How to enable Gradle's reproducible builds functionality to allow others to verify your released libraries don't contain uncommitted, malicious code.
Packaging Wiremock Stubs into a Standalone JAR (2 mins read).
How to use Gradle to package a standalone JAR for Wiremock, including any stubs needed.
Testing Data Serialisation/Deserialization in Java (with Moshi) (3 mins read).
How to validate your JSON types correctly serialise/deserialise when using the Moshi library.
Generate Plain Old Java Objects (POJOs) from JSON Schema Definitions with Gradle (3 mins read).
How to generate POJOs really quickly and easily, with no manual work, using the Gradle jsonschema2pojo Plugin.
by Jamie Tanna
.
#blogumentation
#gradle
#java
#json-schema.
Shift Your Testing Left with Spring Boot Controllers (5 mins read).
How to break down your tests for Spring Boot controllers, which could be used when performing Test Driven Development.
by Jamie Tanna
.
#java
#testing
#tdd
#spring-boot.
Generate Plain Old Java Objects (POJOs) from XML Schema Definitions with Gradle (1 mins read).
How to generate POJOs really quickly and easily, with no manual work, using the Gradle XJC Plugin.
Use (End-to-End) Tracing or Correlation IDs (4 mins read).
Why you should be requesting, and logging, a unique identifier per request for better supportability.
by Jamie Tanna
.
#production
#incident-management
#supportability.
Determining the Version Of Libraries Packaged into the Java AWS Lambda Runtime (3 mins read).
How to determine what libraries, and their respective versions, are packaged into AWS Lambda.
by Jamie Tanna
.
#blogumentation
#java
#aws
#aws-lambda
#serverless.
Lessons Learned from Running Java in Serverless Environments like AWS Lambda (10 mins read).
Some recommendations for running Java as a Serverless application language, for instance on AWS Lambda or Google Cloud Functions.
by Jamie Tanna
.
#java
#aws
#aws-lambda
#serverless
#google-cloud.
Generating Dynamic Identifiers with Thymeleaf (1 mins read).
How to generate a dynamic ids for elements in Thymeleaf.
Controlling the Linux Backlight via the Command-Line (1 mins read).
How to manage your screen backlight on the command-line, without installing any tools.
Make Your RSS Feed Discoverable (1 mins read).
Why and how you should make it possible to automagically discover your feed(s).
by Jamie Tanna
.
#blogumentation
#rss
#feed.
Why You Should Avoid using Client Secret Authentication for OAuth2 Client Credentials (7 mins read).
Why I recommend against using client secret authentication for OAuth2 and OpenID Connect APIs.
by Jamie Tanna
.
#oauth
#oauth2
#oidc
#security.
Running a Java WAR File on the Command-Line (2 mins read).
How to run a WAR file locally, using Jetty, without installing anything.
by Jamie Tanna
.
#blogumentation
#java
#war.
Querying and Interacting with CSV Files More Easily with SQLite (1 mins read).
How to use sqlite3 to parse and query comma-separated value files.
How We Built a Team with a High Net Promoter Score (23 mins read).
Sharing the "Secret Sauce" of why the Purple Pandas was a team that was highly effective, and had a high NPS, too.
by Jamie Tanna
.
#capital-one
#job
#communication
#diversity-and-inclusion.
Creating More Descriptive and Fluent Assertion Helpers (4 mins read).
How to improve test readability, and developer experience, using assertion helpers.
by Jamie Tanna
.
#blogumentation
#testing
#java
#ruby
#rspec
#assertj.
Using Middleman Redirects with a Custom, Non-HTML Content Type (2 mins read).
How to get Middleman's redirect to work with files that are not HTML.
Improving Team Efficiency By Measuring and Improving Code Review Cycle Time (9 mins read).
How measuring how long code review took as a team lead to being able to change our processes, and then deliver much more effectively.
Using JitPack to Install Gradle Plugins from Git Sources (2 mins read).
How to use JitPack to use an unreleased Gradle plugin from a Git repo in your Gradle projects.
Listing Which GitHub Pull Requests are in a Project (2 mins read).
How to list the PRs inside a Project on Github, for example, via a Ruby client.
by Jamie Tanna
.
#blogumentation
#github
#github-projects
#ruby.
Things I Learned Migrating My Personal APIs To Kubernetes (10 mins read).
What I learned while migrating from a number of Java applications on Virtual Private Servers (VPS) to a Kubernetes cluster.
by Jamie Tanna
.
#kubernetes
#personal-infrastructure
#sysadmin
#java
#spring-boot.
Updating a Secret in Kubernetes with the Java Client (3 mins read).
How to use the Kubernetes Java SDK to patch a secret through Kubernetes' secrets API.
How to Undo a git push --force (5 mins read).
How to recover from a force push with Git.
by Jamie Tanna
.
#blogumentation
#git.
Debugging Middleman Code With Middleman's Logger (1 mins read).
How to diagnose issues in Middleman, using logging output.
Lightweight and Powerful Dependency Injection for JVM-based Applications with Dagger (7 mins read).
How and why you should be using Dagger for your dependency injection.
Implementing IndieAuth Server Metadata (2 mins read).
Announcing support for OAuth Server Metadata on my IndieAuth Server.
by Jamie Tanna
.
#www.jvt.me
#indieauth.jvt.me
#indieauth
#oauth2
#oidc.
Announcing a Service for Creating an iCalendar feed for event RSVPs: rsvp-calendar.tanna.dev (2 mins read).
Creating a shared service to allow creating iCalendar feeds for tracking what events you're attending.
by Jamie Tanna
.
#calendar
#indieweb
#rsvp-calendar.tanna.dev
#architect-framework.
"I Thought You'd Be Paid More" - What I Learnt From Posting My Salary Publicly (3 mins read).
A writeup of my lightning talk at Tech Nottingham about my salary post.
by Jamie Tanna
.
#salary
#job
#public-speaking
#talk
#tech-nottingham.
Testing Data Serialisation/Deserialization in Java (with Jackson) (4 mins read).
How to validate your JSON types correctly serialise/deserialise.
Setting up fluentd to Parse Nested JSON from Docker (2 mins read).
How to configure fluentd to parse the inner JSON from a log message as JSON, for use with structured logging.
by Jamie Tanna
.
#blogumentation
#fluentd
#logs
#docker
#kubernetes
#logz.io.
Tips for Reducing Dependency Upgrade Toil with Renovate (5 mins read).
Some tips I've picked up while working with Renovate to keep my projects up-to-date.
by Jamie Tanna
.
#blogumentation
#renovate
#open-source
#security.
Packaging Wiremock Extensions into the Standalone Server Runner (2 mins read).
How to use Gradle to package a standalone JAR for Wiremock, including any extensions needed.
Testing Java Callbacks with Mockito (1 mins read).
How to test invoking a real callback in a Java project, as a unit test.
Providing a Public Salary History Page (2 mins read).
Publishing my salary and compensation history for public use.
by Jamie Tanna
.
#salary
#job.
Releasing a Java Library for Gherkin Formatting (4 mins read).
Announcing the release of a Java library that can pretty-format a Gherkin feature file.
Pushing Back to Git In a Jenkins Multibranch Pipeline (1 mins read).
How to push back to a Git repo using a Jenkins multibranch pipeline.
Using Bill of Materials to Simplify Dependency Management (3 mins read).
Producing a Bill of Materials to simplify dependency management for Java projects.
Making Your Gherkin Scenarios Written Using Human-Readable Language (4 mins read).
A lukewarm take about why you should use natural language, so someone not-as-technical can read it and still derive value.
by Jamie Tanna
.
#software-testing
#cucumber
#communication.
I'm Joining the Cabinet Office (5 mins read).
Announcing my move into the Central Digital and Data Office (CDDO) as a Tech Lead.
by Jamie Tanna
.
#personal
#job
#announcement
#capital-one
#cddo.
Using Abstract Test Classes To Reduce Duplication in Java (4 mins read).
How to use Java's abstract classes to reduce duplication of code across unit tests with common functionality.
by Jamie Tanna
.
#java
#junit5
#testing.
Introducing a Microformats API for Books: books-mf2.fly.dev (2 mins read).
Announcing the Microformats translation layer for book data.
by Jamie Tanna
.
#microformats
#micropub
#reading
#books-mf2.