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127 Modernizing ColdFusion apps (through evolution, not revolution) with Guust Nieuwenhuis

ColdFusion Alive

Release Date: 01/08/2023

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Guust Nieuwenhuis talks about “Modernizing ColdFusion apps (through evolution, not revolution)” in this episode of the ColdFusion Alive Podcast with host Michaela Light.

"We're going to be talking about modernizing your legacy ColdFusion apps through evolution and not revolution. And we'll explain what that means."

Show notes

Why not rewrite legacy apps?

    • A feeling (to rewrite) isn’t sufficient
      • Hot language
      • Blame the tech stack not the architecture, CTO or the dev team
    • Dev phrases
      • Only my language
      • Only rewrite not refactor - belief than is harder to recode than rewrite 
      • Tech > business
    • Delays release
    • Adds risk of project failure
    • Lack of written business rules
    • More bugs and less functionality
    • Expensive
    • “Rewrite code from scratch is the single worst strategic mistake that any software company can make” - Joel Spolsky cofounder of Stack Overflow, Fogbugz and Trello

Do nothing option

    • Build up tech debt
    • Increase security risk footprint month by month
    • User dissatisfaction grows
    • It works after years of tweaks and bug fixing and real world use

Refactor instead

    • Keep database the same
    • Incremental improvements vs waterfall
      • Agile
      • Just in time refactor improvements - surgical micro rewrite 
      • Refresh front end with JavaScript frameworks such as React, Vue
    • Business case driven

Legacy issues

    • Spaghetti code
      • Hard to follow
      • Hard to change
      • Poor naming conventions for functions, include and CFC files and variables
      • Poor variable scoping (global variables can be overwritten and are generally dangerous 
      • Hardcoded “magic” values
    • Deadwood code
    • Security issues due to…
      • Old framework
      • Unsupported libraries 
      • Deprecated integrations
    • No test plan or automated tests
    • Not documented
    • Hard to maintain or add new features
    • Performance issues
    • Adding features

Better architecture

    • API exposure for mobile app or partners
    • Encapsulate functionality
      • Set a boundary
    • Microservices
      • Vs Monolith
      • Specialized CF Engine package management to remove unneeded CFML features for fast load and running. 
    • Strangler Fig Pattern
    • Anti-corruption layer
    • Document architecture decisions in JIRA
    • Magic numbers to static variables
    • Wrapper functions
    • Event driven architecture 

Code trauma and political reluctance 

Same habits, same mistakes!

Read more

    • Eric Evans domain driven design
    • Martin Fowler blog and books 
      • Strangler Fig Pattern
      • Anti-corruption layer
    • Ben Nadel Feature flags 
    • Links below

Going CFCamp in June

 

Mentioned in this episode

Bio

Guust Nieuwenhuis

Guust Nieuwenhuis is a Full Stack Web Wizard with experience in a wide range of technologies. Over the last couple of years, he has been involved in projects for various clients like the European Commission, NSHQ (NATO), Adobe, AS Adventure Group, NS (Dutch railways), CZ Groep, Proximus, Avery Dennison and Mediagenix.

Through We Are North, we do 'Customization-As-A-Service'. We don't build from scratch: we find the best solutions out there and tailor them to our customers' business needs. In doing so, we never lose sight of the goal of the client.

In his free time, he plays the double bass and drums, crosses the forest on his mountain bike and coaches the youth at their local football club (where he is a board member as well). He likes spending time with his wife and two kids or meeting friends for a chat, game or drink.

If he still has some time left, he mainly spends it behind his computer to fulfill his hunger for the latest trends in IT.

Links