Running Ray clusters on AWS without wrecking the bill
Moving a Ray job off your laptop and onto an AWS cluster: the YAML that defines the nodes, the vCPU quota that will bite you, and why ray down matters more than any tuning flag.
Tag: Backend
Azure ML vs. AWS SageMaker: how the infrastructure differs
A side-by-side look at Azure ML and AWS SageMaker: Workspace-centric RBAC against job-level IAM roles, Datastores against raw S3 URIs, and which one holds up once training moves off notebooks.
WordPress PHP support: 7.2 and 7.3 are on the way out
The core team confirmed at Dev Chat that WordPress 7.0 drops PHP 7.2 and 7.3 support. Notes on what that leaves for the 22% of sites still running 7.4, plus where the 6.9.1 maintenance release fits in.
T-statistic vs z-score for trend detection in WordPress
The z-score is fine for a single spike and falls apart on trends. Why the T-statistic is the right measure for slope significance, with PHP you can drop into a custom reporting engine.
WooCommerce 10.5 fixes the ActionScheduler analytics backlog
WooCommerce 10.5 swaps per-order analytics jobs for batched scheduled imports, which is the fix for bloated ActionScheduler tables. Also inside: experimental product object caching, a new shipping tax filter, and the add to cart fix.
A self-healing data pipeline for broken vendor CSVs
A vendor changed a CSV delimiter at 2 AM and my nightly import died. Here is the try, heal, retry loop I built with Pandas, Pydantic and Tenacity so the pipeline handles that class of error itself.
Air quality data repositories, and the formats that break PHP
Where air quality data actually lives, from OpenAQ and the EPA feeds to Copernicus and NASA Earthdata, what NetCDF, COG and Parquet mean for a PHP stack, and a transient-based cache that keeps the fetch off every page load.
Customer churn prediction: the WooCommerce spending slope
Silent churn does not announce itself. Here is how to fit a linear trend to six months of a WooCommerce customer’s orders, read the spending slope, and act on a falling one while the customer is still buying.
WooCommerce REST API caching lands in 10.5 as an experiment
WooCommerce 10.5 adds an experimental REST API cache built on the RestApiCache trait. Notes on wrapping a controller callback, the ETag and 304 handling, why you need Redis or Memcached, and the Nginx header quirk that breaks it.
WordCamp Asia 2026 lands in Mumbai from April 9 to 11
WordCamp Asia 2026 is set for Mumbai, April 9 to 11, at the Jio World Convention Centre, with more than 3,000 attendees expected. Notes on why the flagship event is worth the trip, what sponsorship pays for, and how the hallway track earns its keep.