Patterns of Distributed Systems

Geometric effects of certain system design choices

Chain loading, not preloading: the dynamic linker as a virtualization vector

Issue #54


A Byte of Coding Issue #54
Here's a poem by Seamus Heaney.

Late August, given heavy rain and sun
For a full week, the blackberries would ripen.
At first, just one, a glossy purple clot
Among others, red, green, hard as a knot.
You ate that first one and its flesh was sweet
Like thickened wine: summer's blood was in it
Leaving stains upon the tongue and lust for
Picking. Then red ones inked up and that hunger
Sent us out with milk cans, pea tins, jam-pots
Where briars scratched and wet grass bleached our boots.
Round hayfields, cornfields and potato-drills
We trekked and picked until the cans were full,
Until the tinkling bottom had been covered
With green ones, and on top big dark blobs burned
Like a plate of eyes. Our hands were peppered
With thorn pricks, our palms sticky as Bluebeard's.

We hoarded the fresh berries in the byre.
But when the bath was filled we found a fur,
A rat-grey fungus, glutting on our cache.
The juice was stinking too. Once off the bush
The fruit fermented, the sweet flesh would turn sour.
I always felt like crying. It wasn't fair
That all the lovely canfuls smelt of rot.
Each year I hoped they'd keep, knew they would not.

Patterns of Distributed Systems

Published: 4 August 2020
Tags: design patterns

Distributed systems can be a pain to work with because you have to account for a lot of issues that don't normally arise when working with one system; keeping the systems synced, handling a single system failure, caching, and race conditions. Good design is necessary to have a succesful system. In this extensive series of articles, Unmesh Joshi outlines the problems faced in distributed designs and a number of patterns aimed at solving them.

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Geometric effects of certain system design choices

Published: 4 January 2021
Tags: design patterns

Following along in the design pattern trend, this article by Rachel is written in a more casual manner, but still focuses on highlighting seemingly harmless design choices that can turn into major issues down the line. Rachel explores the different bad design choices made for a service, and concludes with better alternatives you shoudda picked.

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Chain loading, not preloading: the dynamic linker as a virtualization vector

Published: 4 January 2021
Tags: c

Executable and Linkable Format (ELF), is a common standard file format for executable files, object code, shared libraries, and core dumps. In this technical article, Dr Stephen Kell shows how to "run a pre-existing binary program but in some kind of instrumented or modified form" using "ELF-level trickery", which essentially means writing a dynamic linker rather than using LD_PRELOAD.

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Link Clicks Clicks % Unique Clicks Unique Clicks %
Patterns of Distributed Systems 80 22.41% 70 24.65
Geometric effects of certain system design choices 182 50.98% 145 51.06
Chain loading, not preloading: the dynamic linker as a virtualization vector 95 26.61% 69 24.30


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