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John Esposito

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Top Stories by John Esposito

Designing for performance is absolutely essential; but runtime is so crazy a variable that we can reasonably blame too-early optimization for a non-negligible chunk of lousy UX and unmaintainable code. The latest Guide to Performance and Monitoring covers both the static and dynamic, the verifiable and the unknowable sides of building and maintaining performant applications. As Tony Hoare notoriously observed, "Premature optimization is the root of all evil:" that is, the benefits of absolutely maximal optimization are usually much lower than the increased cost of maintenance and debugging that results from the brittleness caused by that optimization. On the other hand, the natural tendency of OOP to prioritize form over performance can generate a codebase that is highly readable but partitioned such that performance-oriented refactoring may prove extremely difficul... (more)

Isn't the Cloud Cool Anymore? | @CloudExpo #PaaS #Cloud #Docker #Containers

Cloud technologies have been gaining traction for some time now. Increases in connectivity throughout the computing world with the creation of more and more connected devices, including mobile and IoT technologies, as well as more and more connected applications on those devices, means cloud computing adoption is ever-increasing. Expectations regarding an application's availability are high, and solutions continue to emerge to increase availability and make scaling applications easier when a user load gets too big. New patterns, platforms, services, and software are pushing appl... (more)

Beyond DevOps: Security vs. Speed? | @DevOpsSummit #APM #DevOps

Fail fast, fail often. Yeah, but the first failure blew up the satellite. Well, this is just a photo-sharing app..not rocket science. Okay, but your photos are accessed by users who have passwords that they probably use for other things..and aren't some photos as important as satellites? Several problems arise when the harm of software failure cannot be treated as an unbound variable. Here are some thoughts on two. I'll write more on two more (one cognitive, one computational) later. Problem 1: Identity Persists Across Non-Obviously Coupled Systems (So the Stakes Are Higher Than ... (more)

DZone Guide to Data Persistence | @CloudExpo #DataCenter #Storage

Data persistence has a way of sneaking up on developers. You start out with a simple, straightforward database that can functionally hold the data you're working with and the data you need to work with later. But as your needs change, you start to modify it here and there, until it becomes a brittle tangle of tables and keys and indexes. You need something more dynamic, but you need to retain the ability to retrieve your persistent data. Now, you're miles from where you started, and staring down the possibility of having to adopt a whole new system. That persistent data is fundam... (more)

Findings on Database Management | @CloudExpo #Cloud #IoT #BigData

Technical decisions around data persistence are hard, which is why we surveyed 583 IT professionals on everything from current DBMS and ORM usage to modern database engines' data structures and access patterns to storing data on a mobile device. The demographics of this survey are as follows: 69% of these respondents use Java as their primary programming language at work. 68% develop primarily web applications. 66% have been IT professionals for over 10 years. 45% work at companies whose headquarters are located in Europe, 27% in the USA. 44% work at companies with more than 500 ... (more)