1. Bookbear Express
    May 22, 2026·Medium read
    essay·relationships·introspection

    I was at dinner with a longtime friend today and he casually brought up something I’d said to him a few years ago. I’d completely forgotten making the remark, and my immediate reaction was, *Why* *would anyone say that*?

    Original
  2. Bookbear Express
    May 22, 2026·Medium read
    essay·relationships·memoir

    I was at dinner with a longtime friend today and he casually brought up something I’d said to him a few years ago. I’d completely forgotten making the remark, and my immediate reaction was, *Why* *would anyone say that*?

    Original
  3. AWS Architecture
    May 20, 2026·Deep read
    technical·security·aws

    A three-account AWS architecture (Production, Recovery, Isolated Recovery Environment) combined with deletion-protected backups and multi-layer validation enables safe recovery from ransomware without trusting compromised production infrastructure.

    • Separate AWS accounts with no trust boundaries prevent compromised production identities from affecting recovery infrastructure and backups
    • AWS Backup logically air-gapped vaults enforce immutable, deletion-protected storage using service-side Compliance mode and multi-party approval controls
    • Validation pipelines combining malware scanning, workload integrity checks, and audit review ensure backups are safe before restoration
    • Parallel recovery stages (investigation, validation, rebuild) minimize downtime while approval gates prevent untrusted data entering rebuilt environments
    • Recovery point selection should target the most recent pre-compromise backup, not necessarily the latest, requiring timeline analysis and candidate testing
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  4. AWS Architecture
    May 19, 2026·Deep read
    technical·ml·aws

    ALS GeoAnalytics deployed LITHOLENS, an AI-driven core logging platform on Amazon EKS, automating geological analysis for mining. The hybrid architecture combines EKS for GPU-accelerated deep learning with Lambda for APIs, achieving cost efficiency and scaling to 40+ active projects across 10 mining companies.

    • LITHOLENS uses deep learning models (RoQE Net, VeinNet, CobbleNet) to automate drill core analysis, replacing manual on-site inspections and eliminating subjective interpretations across geological workflows
    • Hybrid AWS architecture: EKS with G6 GPU instances for compute-intensive ML training/inference + Lambda for stateless API operations + S3/RDS for data persistence enables cost-effective auto-scaling to zero
    • Pre-configured AMIs reduce container startup from minutes to 30 seconds; automated resource shutdown after job completion eliminates idle compute costs for unpredictable mining workloads
    • Delivered 10× faster core analysis with standardized methods across 10 mining companies; improved mineral detection accuracy, eliminated travel requirements for geologists, and enabled real-time project monitoring
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  5. AWS Architecture
    May 19, 2026·Deep read
    technical·ai·infrastructure

    An asynchronous frame generation pipeline using dual CUDA streams, pinned memory buffers, and worker threads eliminates GPU stalls during latent video decoding, improving kernel utilization from 82% to 99.9% and reducing decoding latency by 8.2% on AWS G7e instances.

    • Traditional sequential VAE decoding stalls GPUs while synchronously copying decoded frames to host memory, blocking kernel launches for subsequent chunks
    • Dual CUDA streams (Compute Stream for kernels, Copy Stream for D2H transfers) enable overlapping GPU work with memory copies and disk I/O
    • Double-buffering strategy with pinned host memory and dedicated worker thread ensures three operations overlap safely: compute, transfer, and file writing
    • Benchmark results show 8.2% latency reduction on g7e.2xlarge ($896 savings per 1,000 video hours), with zero impact on model quality or weights
    • Technique generalizes to any chunked video generation pipeline that transfers decoded frames to host memory
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  6. Bookbear Express
    May 18, 2026·Quick read
    memoir·relationships·psychology

    I don’t think you’re good at arguing. I don’t feel that when we disagree you ever assume the best of me, the way you do when you’re calm. I bet everyone in your life feels the same way about you.

    Original
  7. Bookbear Express
    May 18, 2026·Quick read
    essay·memoir·relationships

    I don’t think you’re good at arguing. I don’t feel that when we disagree you ever assume the best of me, the way you do when you’re calm. I bet everyone in your life feels the same way about you.

    Original
  8. AWS Architecture
    May 13, 2026·Deep read
    technical·observability·aws

    Use CloudWatch Metric Streams, Firehose, and Lambda to securely stream metrics to OpenTelemetry collectors running inside a VPC, enabling cost-effective, real-time observability without vendor lock-in.

    • Push-based architecture eliminates API throttling & polling costs vs. pull models like Prometheus, enabling sub-minute latency for alerting
    • Lambda transform function bridges Firehose limitation: Firehose can't reach private VPC endpoints, so Lambda intercepts & routes metrics through NLB
    • OpenTelemetry provides vendor neutrality & cost savings (Apache 2.0 license) while supporting receivers, processors, and exporters for flexible telemetry routing
    • Architecture includes CloudWatch Streams → Firehose → Lambda → NLB → OTel Collector in EC2, with S3 as redundant backup destination
    • Deploy via CloudFormation or AWS CLI; requires VPC, subnets, security groups, and IAM permissions for Streams, Firehose, Lambda, EC2 resources
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  9. Meta Engineering
    May 13, 2026·Medium read
    interview·infrastructure·ml

    Meta's Friend Bubbles feature surfaces Reels watched by friends, but its seemingly simple design masks sophisticated machine learning and cross-platform engineering challenges that scale to billions of users.

    • Simple user-facing features often require deep engineering—Friend Bubbles highlights the gap between perceived and actual complexity in social discovery
    • ML model evolution was critical to getting the feature right, with platform-specific behaviors between iOS and Android requiring distinct optimization approaches
    • A surprising discovery unlocked the entire feature, suggesting unconventional insights drove the final implementation success
    Original