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← How data is laid out and how it is accessed are architectural…
17 connected korrents · 13 moments from 3 Jun 2015 to 26 Aug 2026.
Everything filed under software performance
software performance
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compilers
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design
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developer tools
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LLMs Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Same subject Read this korrent: How data is laid out and how it is accessed are architectural decisions with nothing to do with hot spots, and the difference between two layouts can be enormous. How data is laid out and how it is accessed are architectural decisions with nothing to do with hot spots, and the difference between two layouts can be enormous. Last stated 2 months ago
26 Aug 2026
CM
Casey Muratori — holds since 2026-08-26 — tap for who they are
Same subject: Hand-optimizing hot spots barely matters any more, because the libraries are already fast and CPUs are extremely good at running bad code quickly; what is left is architecture. — tap to centre the map on it Hand-optimizing hot spots barely matters any more, because the libraries are already fast and CPUs are extremely good at running bad code quickly; what is left is architecture. Last stated 2 months ago
26 Aug 2026
CM
Casey Muratori — holds since 2026-08-26 — tap for who they are
Same subject: What trips up newcomers to Rust is not the code but the shape of their data. — tap to centre the map on it What trips up newcomers to Rust is not the code but the shape of their data. Last stated 5 months ago
20 May 2026
AR
Alice Ryhl — holds since 2026-05-20 — tap for who they are
Same subject: Moving the computation to where the data lives is the fundamental design move in object-oriented programming, and it got lost in the noise. — tap to centre the map on it Moving the computation to where the data lives is the fundamental design move in object-oriented programming, and it got lost in the noise. Last stated 4 months ago
1 Jul 2026
KB
Kent Beck — holds since 2026-07-01 — tap for who they are
Same subject: Building on a model is unlike any previous software engineering, because the thing you are building on cannot be designed up front. — tap to centre the map on it Building on a model is unlike any previous software engineering, because the thing you are building on cannot be designed up front. Last stated 3 months ago
27 Jul 2026
BC
Boris Cherny — holds since 2026-07-27 — tap for who they are
Same subject: A startup's durable advantage over a general model is having visibility into data the general model will never see. — tap to centre the map on it A startup's durable advantage over a general model is having visibility into data the general model will never see. Last stated 3 months ago
30 Jul 2026
JD
Jeff Dean — holds since 2026-07-30 — tap for who they are
Same subject: Service boundaries cannot be got right at the start, and moving functionality between services is far harder than moving it inside a monolith. — tap to centre the map on it Service boundaries cannot be got right at the start, and moving functionality between services is far harder than moving it inside a monolith. Last stated 11 years ago
3 Jun 2015
MF
Martin Fowler — holds since 2015-06-03 — tap for who they are
Same subject: Everyone on a team who makes architectural decisions must understand performance, because a codebase that can be optimized later only ends up that way on purpose. — tap to centre the map on it Everyone on a team who makes architectural decisions must understand performance, because a codebase that can be optimized later only ends up that way on purpose. Last stated 2 months ago
26 Aug 2026
CM
Casey Muratori — holds since 2026-08-26 — tap for who they are
Same subject: Beyond designers working in code, this era unlocks access to data and legibility into the business that designers did not have before. — tap to centre the map on it Beyond designers working in code, this era unlocks access to data and legibility into the business that designers did not have before. Last stated 5 months ago
12 May 2026
KB
Katarina Batina — holds since 2026-05-12 — tap for who they are
Same subject: A compiler that also serves an IDE has to be lazy and deferred throughout — a different way of building compilers from the one the textbooks teach. — tap to centre the map on it A compiler that also serves an IDE has to be lazy and deferred throughout — a different way of building compilers from the one the textbooks teach. Last stated 5 months ago
13 May 2026
AH
Anders Hejlsberg — holds since 2026-05-13 — tap for who they are
Same subject: A developer using AI coding tools remains responsible for reviewing the code they ship. — tap to centre the map on it A developer using AI coding tools remains responsible for reviewing the code they ship. Last stated 7 months ago
10 Mar 2026
JS
Jon Seager — holds since 2026-03-10 — tap for who they are
Same subject: A people manager needs enough technical depth to follow discussions and judge debates without relying on trust, but not the deepest technical expertise on the team. — tap to centre the map on it A people manager needs enough technical depth to follow discussions and judge debates without relying on trust, but not the deepest technical expertise on the team. Last stated 2 years ago
21 Jul 2024
BK
Ben Kuhn — holds since 2024-07-21 — tap for who they are
Same subject: A compiler that names every place a change breaks turns refactoring into fixing errors until the compiler stops shouting. — tap to centre the map on it A compiler that names every place a change breaks turns refactoring into fixing errors until the compiler stops shouting. Last stated 5 months ago
20 May 2026
AR
Alice Ryhl — holds since 2026-05-20 — tap for who they are
Same subject: A programming language is not a compiler but an experience: editing, running, debugging and the runtime library all have to fit together as one cycle. — tap to centre the map on it A programming language is not a compiler but an experience: editing, running, debugging and the runtime library all have to fit together as one cycle. Last stated 5 months ago
13 May 2026
AH
Anders Hejlsberg — holds since 2026-05-13 — tap for who they are
Same subject: A speed difference between languages that share the LLVM backend measures the benchmark author, not the languages. — tap to centre the map on it A speed difference between languages that share the LLVM backend measures the benchmark author, not the languages. Last stated 2 years ago
22 Mar 2025
TH
ThePrimeagen — holds since 2025-03-22 — tap for who they are
Same subject: A language can keep changing without a Python-2-to-3 break, as long as code written under the old and the new rules can be mixed freely in one program. — tap to centre the map on it A language can keep changing without a Python-2-to-3 break, as long as code written under the old and the new rules can be mixed freely in one program. Last stated 5 months ago
20 May 2026
AR
Alice Ryhl — holds since 2026-05-20 — tap for who they are
Same subject: Python is ugly: full of superfluous instructions kept since 1987 for legacy reasons, and its __init__ offends the sensibilities to the core. — tap to centre the map on it Python is ugly: full of superfluous instructions kept since 1987 for legacy reasons, and its __init__ offends the sensibilities to the core. Last stated a year ago
12 Jul 2025
DH
David Heinemeier Hansson — holds since 2025-07-12 — tap for who they are
Same subject: Sharing code between classes via inheritance in Python tends to produce a bad experience. — tap to centre the map on it Sharing code between classes via inheritance in Python tends to produce a bad experience. Last stated 3 months ago
21 Jul 2026
JE
Julia Evans — holds since 2026-07-21 — tap for who they are
At the centre
How data is laid out and how it is accessed are architectural decisions with nothing to do with hot spots, and the difference between two layouts can be enormous.
Holds Read this korrent →
Hand-optimizing hot spots barely matters any more, because the libraries are already fast and CPUs are extremely good at running bad code quickly; what is left is architecture.
Holds
What trips up newcomers to Rust is not the code but the shape of their data.
Holds
Moving the computation to where the data lives is the fundamental design move in object-oriented programming, and it got lost in the noise.
Holds
Building on a model is unlike any previous software engineering, because the thing you are building on cannot be designed up front.
Holds
A startup's durable advantage over a general model is having visibility into data the general model will never see.
Holds
Service boundaries cannot be got right at the start, and moving functionality between services is far harder than moving it inside a monolith.
Holds
Everyone on a team who makes architectural decisions must understand performance, because a codebase that can be optimized later only ends up that way on purpose.
Holds
Beyond designers working in code, this era unlocks access to data and legibility into the business that designers did not have before.
Holds
A compiler that also serves an IDE has to be lazy and deferred throughout — a different way of building compilers from the one the textbooks teach.
Holds
A developer using AI coding tools remains responsible for reviewing the code they ship.
Holds
A people manager needs enough technical depth to follow discussions and judge debates without relying on trust, but not the deepest technical expertise on the team.
Holds
A compiler that names every place a change breaks turns refactoring into fixing errors until the compiler stops shouting.
Holds
A programming language is not a compiler but an experience: editing, running, debugging and the runtime library all have to fit together as one cycle.
Holds
A speed difference between languages that share the LLVM backend measures the benchmark author, not the languages.
Holds
A language can keep changing without a Python-2-to-3 break, as long as code written under the old and the new rules can be mixed freely in one program.
Holds
Python is ugly: full of superfluous instructions kept since 1987 for legacy reasons, and its __init__ offends the sensibilities to the core.
Holds
Sharing code between classes via inheritance in Python tends to produce a bad experience.
Holds