Technical deep-dives on AI/ML, distributed systems, and software engineering.https://piyushc.comhttps://piyushc.com/blog/Building-Mentis-A-Memory-Layer-For-Coding-Agentshttps://piyushc.com/blog/Building-Mentis-A-Memory-Layer-For-Coding-AgentsHow Mentis stores coding-agent attempts, retrieves related tasks, and marks outdated conclusions.Sat, 26 Sep 2026 00:00:00 GMTai-agentsmemorymcpneo4jretrievalPiyush Choudharihttps://piyushc.com/blog/Sandboxing-Coding-Agentshttps://piyushc.com/blog/Sandboxing-Coding-AgentsBuilding a coding harness and a sandboxing platform to create self-driving development.Thu, 03 Sep 2026 00:00:00 GMTai-agentssandboxingdeveloper-toolsgithubobservabilityPiyush Choudharihttps://piyushc.com/blog/Making-Agents-Play-Pictionaryhttps://piyushc.com/blog/Making-Agents-Play-PictionaryA turn-based drawing-and-guessing game where AI agents competeSun, 17 May 2026 00:00:00 GMTai-agentsclaudemulti-agent-systemspictionaryPiyush Choudharihttps://piyushc.com/blog/My-Codebases-Have-an-AI-Receptionist-Nowhttps://piyushc.com/blog/My-Codebases-Have-an-AI-Receptionist-NowI built an agentic codebase navigator that lets engineers and recruiters ask anything about my projects, no RAG, no embeddings, just pure read-and-reason.Wed, 08 Apr 2026 00:00:00 GMTagentic-retrievalcode-navigationlanggraphPiyush Choudharihttps://piyushc.com/blog/Implementing-An-SQS-Like-Message-Queue-Systemhttps://piyushc.com/blog/Implementing-An-SQS-Like-Message-Queue-SystemI built a rudimentary AWS SQS clone with managed queues, visibility timeouts, DLQs.Thu, 08 Jan 2026 00:00:00 GMTmessage-queuesnodejsexpresssqlitePiyush Choudharihttps://piyushc.com/blog/How-I-Used-Postgres-Groq-And-AI-SDK-To-Create-My-Portfolio-Website-Chatbothttps://piyushc.com/blog/How-I-Used-Postgres-Groq-And-AI-SDK-To-Create-My-Portfolio-Website-ChatbotMy portfolio website contains a decent amount of text data, so I implemented a chatbot to interface with it.Thu, 25 Dec 2025 00:00:00 GMTvector-databasepostgresqlai-sdkgroqportfolio-chatbottool-callingPiyush Choudharihttps://piyushc.com/blog/Designing-a-Deterministic-Low-Latency-Decision-Engine-with-CPPhttps://piyushc.com/blog/Designing-a-Deterministic-Low-Latency-Decision-Engine-with-CPPA high performance, deterministic decision tree engine built in C++ that evaluates rules via gRPC with low latency, hot reloadable trees, and production ready observability.Fri, 19 Dec 2025 00:00:00 GMTdecision-enginedecision-treescppgrpcPiyush Choudharihttps://piyushc.com/blog/Simulating-vLLMs-PagedAttentionhttps://piyushc.com/blog/Simulating-vLLMs-PagedAttentionAn implementation of a simulation of PagedAttention in PythonMon, 08 Dec 2025 00:00:00 GMTpaged-attentionkv-cachevllmPiyush Choudharihttps://piyushc.com/blog/Making-A-Peer-Review-System-for-My-Blogs-Using-Google-ADK-And-Mem0https://piyushc.com/blog/Making-A-Peer-Review-System-for-My-Blogs-Using-Google-ADK-And-Mem0I needed an automation peer review my blogs, so I used Google-ADK and Mem0 to create an end to end system.Wed, 26 Nov 2025 00:00:00 GMTai-agentsblog-reviewgoogle-adkmem0Piyush Choudharihttps://piyushc.com/blog/Training-a-Mixture-of-Experts-Routerhttps://piyushc.com/blog/Training-a-Mixture-of-Experts-RouterI was curious about MoEs, so I implemented and tested one.Mon, 17 Nov 2025 00:00:00 GMTmixture-of-expertstransformersPiyush Choudharihttps://piyushc.com/blog/Building-A-Vector-Database-from-Scratch-CapybaraDBhttps://piyushc.com/blog/Building-A-Vector-Database-from-Scratch-CapybaraDBA custom implementation of a toy vector databaseTue, 04 Nov 2025 00:00:00 GMTvector-databaseapproximate-nearest-neighborembeddingsPiyush Choudharihttps://piyushc.com/blog/Be-Curious-About-Your-Computehttps://piyushc.com/blog/Be-Curious-About-Your-ComputeAfter facing a blocker related to hardware, I decided to deep dive into it: An ExplainerWed, 24 Sep 2025 00:00:00 GMTgputpuvrammodel-servingPiyush Choudharihttps://piyushc.com/blog/How-I-Automated-My-Social-Media-Workflow-with-LangGraphhttps://piyushc.com/blog/How-I-Automated-My-Social-Media-Workflow-with-LangGraphFor me, posting on social media is a tedious task and repetitive task: draft → edit → get feedback → post. So I used Langgraph and some AI magic sauce to automate away these tedious jobs.Sun, 14 Sep 2025 00:00:00 GMTai-agentslanggraphsocial-mediaworkflow-automationPiyush Choudharihttps://piyushc.com/blog/SHAP-values-for-GBTshttps://piyushc.com/blog/SHAP-values-for-GBTsThis blog explores how Gradient Boosted Trees can be explained using PDP, ICE, and SHAP — with TreeSHAP making black-box models transparent and highly interpretable.Mon, 01 Sep 2025 00:00:00 GMTgradient-boostingmodel-interpretabilityshapPiyush Choudharihttps://piyushc.com/blog/welcome-to-my-bloghttps://piyushc.com/blog/welcome-to-my-blogIntroducing my new blog where I'll share insights about software engineering, AI, and technology.Fri, 29 Aug 2025 00:00:00 GMTintroductionPiyush Choudhari