In San Francisco for Deep Tech Week?
Join us tonight for:
🚀 Build Night: The Data Layer for Agentic Apps
Hosted by @pgEdgeInc, @constructive_io, @AngelList, and Frontier Syndicate.
Constructive
1,202 posts
Constructive
@constructive_io
Your digital construction kit for secure, modular Postgres. Build production apps that last.
Everyone wants smarter agents. We care more about smarter constraints. Better models won't decide who wins. The operators who win will be the ones who can run thousands of agent actions without leaking data, breaking permissions, or quietly introducing security holes.1/ There's a bottleneck in AI that hundreds of billions of dollars can't buy past: the very few people who can wield this technology well enough to matter. There aren't nearly enough of them, and the entire buildout runs through them.- Constructive repostedCode generation isn't the moat. Engineering is. Last week I sat on a panel at the SVB Experience Center with Sanjeev Dhanda (@GoogleDeepMind) and @abhiaiyer (@mastra) on the move from vibe coding to agentic engineering @constructive_io @SiliconVlyBank @Kristopherfloyd
00:00 - Constructive repostedWe're at capacity for the tonights session! Couldn't be more stoked to chat about building systems that agents and humans can converge on to build trusted code with Sanjeev Dhanda (@GoogleDeepMind) and @abhiaiyer (@mastra)! Thanks @Kristopherfloyd (Frontier Syndicate) and
- Constructive repostedUsing @PlanetScale's own benchmark data. Removing the volatile and non-optimized polices, pure RLS vs. no RLS (I'm including original data for comparison) This is what performance looks like when security is done right.
Replying to @danlynchThe @PlanetScale RLS benchmarks compare per-row function calls vs no RLS. But real RLS policies don’t have to be function-based or evaluated per row. With proper design (stable conditions, InitPlan caching via subqueries, good indexes), you get near-zero overhead + full index - Constructive repostedInteresting take on RLS from @PlanetScale — but the “per-row overhead” they highlight isn’t a limitation of RLS, it’s a consequence of how the policy is written a thread on their take and benchmark 🧵Postgres RLS sounds great in theory: embedded access control right in the database. In practice, there's complexity in policy configuration, managing your attack surface, and performance implications. Our latest article takes a deep dive into RLS.
- Constructive repostedThis is exactly why, and completely validates everything we do at @constructive_io because RLS is complex and must be managed or you'll make every mistake that @PlanetScale is assuming here. We solve all of these issues, and then some 🚀Postgres RLS sounds great in theory: embedded access control right in the database. In practice, there's complexity in policy configuration, managing your attack surface, and performance implications. Our latest article takes a deep dive into RLS.
- Constructive repostedhappy to share @constructive_io just made the front page of TechDay ⚡️ We open sourced agentic-db → Postgres as the memory layer for AI agents → no more markdown hacks → no more stuffing context into prompts Agents are probabilistic. Your data shouldn’t be!
- Constructive repostedAI can write the code. Engineers have to make it secure and correct Speaking on a panel representing @constructive_io with AI leaders from @GoogleDeepMind (Sanjeev Dhanda), @abhiaiyer (CTO, @mastra) at the SVB Experience Center on moving from vibe coding → agentic engineering
- Constructive repostedYesterday at the @postgresconf I spoke about secure-by-default, modular Postgres ⚡️ As agents start generating applications, the database becomes the trust layer. Security can’t be a follow-up step anymore—it has to be the starting point. This is what we’re building at
- Constructive repostedHad the pleasure of sitting down Greg Kemnitz and Curt Kolovson about the origin of Postgres, two of the original programmers from when it started 40 years ago! What a journey it's been and such a successful project. More importantly, I’m grateful to call them good friends.
