GoGoGrandparent, a Y Combinator S16 alumni company, is currently hiring backend engineers. The job listing was posted on YCombinator's company jobs board. The position is focused on backend engineering work. No further details about the role, compensation, or requirements were included in the available listing.
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A technical guide published on DEV Community breaks down the core components of AWS Virtual Private Cloud (VPC) networking, explaining not just what each element is but why it is designed that way. The article covers CIDR block sizing, noting that AWS reserves five IP addresses per subnet and recommending a /16 block for the VPC itself to avoid costly renumbering later. It outlines a practical three-availability-zone production layout using 10.0.0.0/16, with distinct subnet tiers for public-facing resources, application workloads, and data services, emphasizing that larger /20 blocks are needed for app tiers due to EKS pod IP consumption. The guide clarifies that a subnet's public or private designation is determined entirely by its associated route table, not any inherent subnet property. It also details how Internet Gateways and NAT Gateways function, and stresses that route table associations must be explicitly configured in Terraform for routing to take effect.
A developer has released Flaky HTTP, an open-source Java 11 library designed to deliberately introduce unreliable behavior into HTTP calls for testing purposes. The library wraps Java's standard HttpClient and can inject configurable latency, synthetic HTTP error responses, and probabilistic failures targeting specific URIs. It is aimed at integration and resilience testing scenarios where developers need to verify that retry logic, circuit breakers, and fallback mechanisms actually work as intended. Flaky HTTP operates without additional runtime dependencies and supports both synchronous and asynchronous HTTP calls, including cancellation propagation. The library is available on Maven under the coordinate com.tapadyuti:flaky-http:1.0.0 and is intended as a lightweight tool rather than a full chaos-engineering platform.
On August 13, 2026, a software engineer delivered a session titled 'Isolation and Trust Boundaries in Production' at CS Week Perú 2026, an IEEE Computer Society student event held across Peru. The talk argued that reliable system design should focus on limiting the blast radius of failures rather than attempting to prevent every failure outright. The speaker introduced the concept of explicit trust boundaries, urging engineers to define what must be protected, what may cross each boundary, and what should happen when a violation occurs. Three isolation dimensions were highlighted: logical context isolation, cryptographic identity isolation, and physical process isolation, each addressing a distinct class of production failure. The session also cautioned that passing unit tests does not guarantee system-wide architectural invariants hold under real-world conditions such as concurrency, multi-tenancy, or resource exhaustion.
A Windows 11 virtual machine running on Proxmox VE was reporting nearly 100% memory usage in monitoring tools, while Windows Task Manager showed actual usage of only 30–50%. The root cause was traced to the PVE Ballooning Device being disabled in the VM configuration, which cut off the guest memory statistics pipeline between Windows and Proxmox. Although the VirtIO BalloonService was installed and running inside Windows, the disabled balloon setting on the Proxmox side meant accurate memory data was never passed to the hypervisor or monitoring systems. The VM itself continued to operate normally, making the misconfiguration easy to overlook during routine checks. This issue is particularly common with Windows VMs migrated from other platforms like VMware ESXi or Hyper-V, where memory ballooning settings may not receive the same attention as CPU, network, or storage drivers.
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