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VAVictor Alekseevkrocodl.hashnode.devJul 3 · 61 min read

Database synchronization based on Invertible Bloom Filters

The problem: synchronize state between two tables, a source and a destination. Most approaches depend on specific database server capabilities or on the structure of the source table. In 2011, Michael

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NENguyen Engineernguyengineer.devJun 30 · 14 min read

How I built and scaled real‑time chat app from 2 to millions of users — without a rewrite?

Real-time is one of those features that demos in an afternoon and humbles you for a month. Open a WebSocket, push a message, watch it appear on the other screen — done, right? That's the part that's e

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AAAbstract Algorithmsabstractalgorithms.hashnode.devApr 17 · 49 min read

Change Feed vs Change Stream: CDC Internals, Reliability, and When to Avoid Each

In the summer of 2023, the platform team at a fast-growing e-commerce company was handling 100,000 orders per day across three microservices: Order Service, Inventory Service, and Billing Service. All

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FSFahad Shahrisingwave.comApr 8 · 16 min read

Best CDC Tools for Real-Time Analytics in 2026

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FSFahad Shahrisingwave.comApr 7 · 14 min read

Agentic Data Architecture: A SQL-First Implementation Guide

Introduction Search for "agentic data architecture" and you will find no shortage of material. Pyramid diagrams with three to five layers. Circles labeled "orchestration" pointing to other circles labeled "context." Frameworks with names like the Rea...

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FSFahad Shahrisingwave.comApr 7 · 12 min read

Build a Continuous RAG Pipeline with Streaming SQL

Introduction You spent three weeks building a RAG pipeline. The embeddings are clean. The retrieval scores look good. The demo works perfectly. Then it goes to production, and a week later the support team starts forwarding user complaints: the assis...

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FSFahad Shahrisingwave.comApr 7 · 11 min read

How to Build a Real-Time Context Engine for AI Agents

{ "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What is a context engine for AI agents?", "acceptedAnswer": { "@type": "Answer", "text": "A context en...

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FSFahad Shahrisingwave.comApr 7 · 12 min read

How to Keep RAG Embeddings Fresh Automatically

{ "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Why do RAG embeddings go stale?", "acceptedAnswer": { "@type": "Answer", "text": "RAG embeddings go st...

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AAAbstract Algorithmsabstractalgorithms.hashnode.devApr 5 · 37 min read

How CDC Works Across Databases: PostgreSQL, MySQL, MongoDB, and Beyond

A data engineering team at a fintech company built what they believed was a robust Change Data Capture pipeline: three source databases (PostgreSQL, MongoDB, and Cassandra), Debezium connectors wired

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RLRisingWave Labsrisingwave.comApr 3 · 7 min read

Streaming CDC Data to Apache Iceberg with RisingWave

To stream CDC data to Apache Iceberg with RisingWave: connect RisingWave's built-in Postgres CDC or MySQL CDC connector to your source database, create a materialized view to shape the data, and define an Iceberg sink with type = 'upsert'. RisingWave...

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#cdc

Explore Hashnode

Trending tags this week

Database synchronization based on Invertible Bloom Filters

How I built and scaled real‑time chat app from 2 to millions of users — without a rewrite?

Change Feed vs Change Stream: CDC Internals, Reliability, and When to Avoid Each

Best CDC Tools for Real-Time Analytics in 2026

Agentic Data Architecture: A SQL-First Implementation Guide

Build a Continuous RAG Pipeline with Streaming SQL

How to Build a Real-Time Context Engine for AI Agents

How to Keep RAG Embeddings Fresh Automatically

How CDC Works Across Databases: PostgreSQL, MySQL, MongoDB, and Beyond

Streaming CDC Data to Apache Iceberg with RisingWave