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Writing on GPUs, LLMs, MLOps, Kubernetes — and mindset · 3525 posts
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eBPF Runtime Security — Tetragon, Falco, and BPF LSM
Why runtime security is essential in the era of supply chain attacks and container escapes, and how eBPF answers the call. Covers Falco rule writing, kernel-level blocking with Tetragon TracingPolicy, the principles of B
2026-06-13 · 15 min read #ebpf#security#falco#tetragon#kubernetesCluster API Deep Dive — Managing Clusters as Kubernetes Resources ♪ Listenable
In an era of cluster sprawl, Cluster API lets you declare Kubernetes clusters themselves as Kubernetes resources and have controllers reconcile them. This deep dive dissects the architecture and core CRD relationships, a
2026-06-13 · 24 min read #kubernetes#cluster-api#multi-cluster#gitops#infrastructureIstio Ambient vs Sidecar — Choosing Your Service Mesh Architecture in 2026 ♪ Listenable
A quantitative look at the resource cost and operational pain of the sidecar model, followed by a deep dive into the Ambient architecture built from ztunnel and waypoint proxies. Covers data path comparison, feature pari
2026-06-13 · 18 min read #istio#ambient-mesh#sidecar#ztunnel#kubernetesFinancial-Grade Kubernetes Platforms — Making Regulation and Cloud Native Coexist
How to design and operate a Kubernetes platform under financial regulations such as network segregation and electronic finance supervision rules. Covers multi-tenancy isolation criteria, Kyverno policy gates, audit trail
2026-06-13 · 20 min read #kubernetes#finance#security#compliance#multi-tenancyIstio Security in Practice — mTLS, AuthorizationPolicy, and the Zero Trust Mesh ♪ Listenable
From the mesh security model built on SPIFFE identities and the istiod CA, through the PERMISSIVE-to-STRICT migration strategy for PeerAuthentication, least-privilege AuthorizationPolicy design, JWT end-user authenticati
2026-06-13 · 21 min read #istio#mtls#security#authorizationpolicy#zero-trustOpen Banking and MyData API Architecture — The Technology of Financial Data Openness
The API architecture of Korean open banking shared network and MyData (personal credit information management). We cover standard API specs and auth tokens, comparison with UK Open Banking and the FAPI security profile,
2026-06-13 · 16 min read #finance#open-banking#mydata#api#oauth2ISO 20022 and SWIFT — The Great Migration of Financial Messaging Standards
From telex to SWIFT MT to ISO 20022 MX — the history and structure of financial messaging. We cover the pacs/pain/camt message families, field mapping between MT103 and pacs.008, the CBPR+ migration, message transformati
2026-06-13 · 15 min read #iso20022#swift#payments#financial-messaging#xmlIstio Traffic Management in Practice — From VirtualService to Automated Canaries
A hands-on guide covering the relationships between Istio traffic APIs, header and weight-based routing, canary automation with Flagger and Argo Rollouts, mirroring, fault injection, and how to derive circuit breaker set
2026-06-13 · 17 min read #istio#virtualservice#canary#traffic-management#kubernetesDesigning a Deposit Interest Calculation Engine — From Day-Count Math to Preferential Rates ♪ Listenable
A practitioner-oriented design of a deposit interest calculation engine. We cover day-count conventions and their traps, simple and compound interest implementations, a preferential rate rule engine, withholding tax, rat
2026-06-13 · 18 min read #interest#core-banking#deposit#bigdecimal#bankingBank Deposit System Architecture — Dissecting the Heart of Core Banking ♪ Listenable
A deep dive into the deposit system at the heart of core banking. We cover account ledger design, deposit and withdrawal transaction processing, concurrency control, and how end-of-day closing coexists with 24x7 operatio
2026-06-13 · 19 min read #core-banking#deposit#ledger#architecture#bankingTrading Back Office and Settlement Systems — The Data Journey Across Front, Middle, and Back
Follow a single trade through its full data journey from order to execution, clearing, and settlement. We map FO/MO/BO systems, position and PnL management, confirmation and reconciliation, DVP settlement, Korean market
2026-06-13 · 17 min read #back-office#settlement#trading#capital-markets#reconciliationLending Systems and the LOS — Architecture from Loan Application to Disbursement ♪ Listenable
A deep dive into the overall architecture of lending systems at banks, card issuers, and capital companies, centered on the LOS (Loan Origination System). We walk through the pipeline from application to underwriting, ap
2026-06-13 · 19 min read #lending#los#loan-origination#core-banking#fintechBatch and End-of-Day Processing in Banking — The Architecture That Rules the Night ♪ Listenable
Why batch processing remains central in banking and the full picture of end-of-day (EOD) processing. We cover job schedulers and dependency DAGs, checkpoint restarts, partitioning and chunk processing, center-cut and dat
2026-06-13 · 18 min read #finance#batch#eod#spring-batch#schedulerCore Banking Modernization Strategy — From Mainframe to Cloud Native ♪ Listenable
A comparative analysis of strategies for modernizing legacy core banking. We cover big-bang rebuilds versus incremental strangler patterns, core decomposition, the cloud-native core banking wave, the Korean regulatory en
2026-06-13 · 23 min read #core-banking#modernization#cloud#mainframe#migrationLoan Servicing Systems — The Data Flow of Delinquency, Provisions, and NPL ♪ Listenable
A tour of the world after loan disbursement. We cover repayment schedule generation (equal installment, equal principal, bullet), payment and prepayment processing, delinquency bucket transitions and overdue interest cal
2026-06-13 · 26 min read #lending#loan-servicing#delinquency#npl#ifrs9Investment Banking Systems Architecture — From Deal Pipeline to Syndication ♪ Listenable
A systems-eye dissection of the investment banking domain. We cover deal pipelines, conflict checks, the technical implementation of Chinese walls, bookbuilding and allocation logic, syndicated loan administration, and M
2026-06-13 · 20 min read #investment-banking#capital-markets#system-design#compliance#workflowDesigning a Credit Scoring System (CSS) — From Scorecards to ML Underwriting
A deep dive into the CSS (Credit Scoring System), the brain of loan underwriting. We cover application vs behavior scores, WoE/IV-based scorecard development, the regulatory comparison between logistic regression and ML
2026-06-13 · 16 min read #credit-scoring#css#risk-management#machine-learning#scorecardBanking Ledger Design — Double-Entry Bookkeeping, Event Sourcing, and Consistency Down to the Last Cent
How to design the ledger at the heart of a banking system. We cover double-entry principles, the journal and posting data model, balance computation strategies, event sourcing, hot-account concurrency control, idempotenc
2026-06-13 · 17 min read #finance#ledger#double-entry#event-sourcing#core-bankingBackstage Scaffolder — Turning Golden Paths into Code
How to codify golden paths with the Backstage Scaffolder. Covers a full template.yaml dissection, built-in actions and Nunjucks templating, custom action development, injecting organizational standards into skeletons, te
2026-06-13 · 14 min read #backstage#scaffolder#golden-path#platform-engineering#devopsBackstage in Production — TechDocs, Plugin Development, and the Production Checklist
Part 3 of the Backstage IDP series. Covers the docs-as-code pipeline with TechDocs and S3 publishing, frontend/backend plugin architecture and custom plugin development, the permission framework, upgrade strategy, and pe
2026-06-13 · 14 min read #backstage#techdocs#plugins#platform-engineering#devops