
High-Scale Fintech Wallet Lessons from Barq
Discover the architectural, database, and design principles required to build a high-scale fintech wallet, drawing key lessons from Barq's massive $329.5M Series A.
7 in-depth notes on PostgreSQL, written by the people who do the work.

Discover the architectural, database, and design principles required to build a high-scale fintech wallet, drawing key lessons from Barq's massive $329.5M Series A.

Discover the most common PostgreSQL scalability bottlenecks and how to solve them. Learn how to optimize connection pooling, manage table bloat, configure read replicas, and partition massive databases.

A deep architectural comparison of Citus, Multigres, and manual sharding for horizontal scaling in PostgreSQL. Learn how to scale your database without hitting the Postgres cliff.

A real-numbers budget and architectural breakdown for building secure, compliant SaaS platforms in Australia under the 2026 regulatory updates.

An engineering and cost guide for technical leaders choosing between pgvector in PostgreSQL and dedicated vector databases like Pinecone, Weaviate, or Qdrant in 2026.

A tight technical decision guide on using PostgreSQL Row-Level Security (RLS) for multi-tenant isolation, exploring common performance pitfalls, indexing, and connection pool management.

Discover the exact playbook we used to rescue a scaling fintech product from critical database downtime using strategic caching, index optimization, and connection pooling.
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