@sysdsgn

A technical community for the for the passionate, the obsessed and the curious | @sysconf_ @sdsaprogram | by @_alternatewolf @mazibayo @chidiwilliams__

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Joined September 2020
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As hinted earlier, our next book club series kicks off this Sunday (Jan 11) with Designing Data-Intensive Applications (DDIA). See you there 🚀 : discord.gg/hNdUgEKgQD

Join the SysDsgn Discord Server!

Check out the SysDsgn community on Discord - hang out with 609 other members and enjoy free voice and text chat.

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SysDsgn
@sysdsgn25 Nov 2025
This brings the throwback series of our DB Internals book club to an end! We hope the sessions help you as you go through the book. 🚨Coming up next in our book club: Designing Data-Intensive Applications by Martin Kleppmann. More details coming soon!
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We’re excited to announce Kelechi Onyekwere (@khelechy1337) as a speaker at SysConf 2026! His talk is titled “Balancing CAP: A Conflict-Free Replicated Data Type and Distributed Hash Table Harmony.” This session digs into a research paper written by the speaker that proposes an approach to navigate traditional CAP theorem tradeoffs when building distributed systems by combining CRDTs with Kademlia Hash Tables.
“Balancing CAP: A Conflict-Free Replicated Data Type and Distributed Hash Table Harmony.” is the title of Kelechi’s talk at SysConf 2026.

ALT “Balancing CAP: A Conflict-Free Replicated Data Type and Distributed Hash Table Harmony.” is the title of Kelechi’s talk at SysConf 2026.

Kelechi Onyekwere is a software engineer and an independent researcher with 7+ years of experience building products across multiple industries such as finance and travel. He is passionate about distributed systems, open source, financial solutions, and blockchain.

ALT Kelechi Onyekwere is a software engineer and an independent researcher with 7+ years of experience building products across multiple industries such as finance and travel. He is passionate about distributed systems, open source, financial solutions, and blockchain.

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We’re excited to announce Anthony Alaribe (@tonialaribe), co-founder of @monoscope_tech, as a speaker at SysConf 2026! His talk is titled “Timefusion: Retrospective on running a custom timeseries database in production.” Anthony’s talk at #SysConf25 focused on the motivation for building Timefusion, a time series database built in Rust. This year, his talk examines the reality of powering an observability platform using Timefusion over the last year, including painful incidents, what has gone well and the techniques the @monoscope_tech team has implemented to stay fast at scale.
“Timefusion: Retrospective on running a custom timeseries database in production.” is the title of Anthony’s talk at SysConf 2026.

ALT “Timefusion: Retrospective on running a custom timeseries database in production.” is the title of Anthony’s talk at SysConf 2026.

Anthony has spent over a decade building software at companies like Opera and DeliveryHero. Now, he’s the co-founder of Monoscope.tech, a startup that built Monoscope, an open-source, AI-powered, observability platform to see, debug and monitor everything in your software systems.

ALT Anthony has spent over a decade building software at companies like Opera and DeliveryHero. Now, he’s the co-founder of Monoscope.tech, a startup that built Monoscope, an open-source, AI-powered, observability platform to see, debug and monitor everything in your software systems.

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We’re excited to announce Alex Idowu (@nitrocode) as a speaker at SysConf 2026! His talk is titled “How to Safely Give AI Agents a Terminal.” AI coding agents that execute commands as part of their workflows have become quite common today; however, most of them are still set up with unfettered shell access to a computer (laptop, bastion, shared runner etc.). This talk examines how to address this risk by reframing it as an isolation and lifecycle technical problem. Alex will draw lessons from his experience building Rexec, an open-source platform that provides disposable network-isolated Linux terminals in the cloud or lets you connect your own machines.
Alex Idowu is the CTO of PipeOps. “How to Safely Give AI Agents a Terminal” is the title of his talk at SysConf 2026.

ALT Alex Idowu is the CTO of PipeOps. “How to Safely Give AI Agents a Terminal” is the title of his talk at SysConf 2026.

Alex is the CTO of PipeOps, a SaaS platform that helps you monitor, manage, and deploy your application to your native cloud provider. With over 10 years of experience in the tech industry, Alex has worked on projects and led teams across multiple industries like cloud and finance. Beyond work, Alex engages in R&D and champions open-source knowledge sharing for collective progress.

ALT Alex is the CTO of PipeOps, a SaaS platform that helps you monitor, manage, and deploy your application to your native cloud provider. With over 10 years of experience in the tech industry, Alex has worked on projects and led teams across multiple industries like cloud and finance. Beyond work, Alex engages in R&D and champions open-source knowledge sharing for collective progress.

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We’re excited to announce Jennifer Chukwu (@JennifaChukwu) as a speaker at SysConf 2026! Her talk is titled “Fix one bottleneck, create another.” This talk explores the evolution of the directory scanning engine behind the filesystem analyzer Jennifer built, with a focus on design choices and the engineering needed to implement those choices. The engine evolved through four designs: single-threaded DFS, shared queue thread pool, per-thread deques, and lock-free Chase-Lev deque. Each iteration solved a problem in the previous iteration while introducing its own challenges. Ultimately, the speaker’s work here reduced scanning 2 million files from 47 secs on Linux and 65 secs on Windows) to 2 secs and 4 secs respectively.
Jennifer is a software engineer. “Fix one bottleneck, create another.” is the title of her talk at SysConf 2026.

ALT Jennifer is a software engineer. “Fix one bottleneck, create another.” is the title of her talk at SysConf 2026.

Jennifer is a Systems Software Engineer interested in performance engineering, concurrency, and low-level systems programming. She enjoys building software that explores the interaction between algorithms, operating systems, and hardware.

ALT Jennifer is a Systems Software Engineer interested in performance engineering, concurrency, and low-level systems programming. She enjoys building software that explores the interaction between algorithms, operating systems, and hardware.

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We’re excited to announce Peculiar Erhisohwode (@peculiarerhis) as a speaker at SysConf 2026! Her talk is titled “Mapping Deliverability: How We Rebuilt Chowdeck's Delivery Coverage with Polygons.” Before @peculiarerhis’s work, deliverability on @chowdeck was decided purely by distance, but this proved insufficient in the face of issues like flood, traffic or intermittently blocked roads. To address this, she built a more robust, layered deliverability-check flow, that used polygons to model deliverable areas and allowed the operations team to redraw the boundaries as various factors (like the aforementioned) changed. This talk focuses on the details of this implementation, including how a 4-week deadline impacted design decisions for the backbone that decides what Chowdeck can deliver today.
Peculiar Erhisohwode is a founding engineer at Chowdeck. “Mapping Deliverability: How We Rebuilt Chowdeck's Delivery Coverage with Polygons.” is the title of her talk at SysConf 2026.

ALT Peculiar Erhisohwode is a founding engineer at Chowdeck. “Mapping Deliverability: How We Rebuilt Chowdeck's Delivery Coverage with Polygons.” is the title of her talk at SysConf 2026.

Peculiar is a software engineer with a background in backend engineering and distributed systems. She is a founding engineer at Chowdeck, one of Africa’s biggest startups, where she joined as the second backend engineer and first female software engineer. She designed, built, shipped, and owned end-to-end much of the delivery infrastructure that still runs the company today, including the polygon system this talk is about.

ALT Peculiar is a software engineer with a background in backend engineering and distributed systems. She is a founding engineer at Chowdeck, one of Africa’s biggest startups, where she joined as the second backend engineer and first female software engineer. She designed, built, shipped, and owned end-to-end much of the delivery infrastructure that still runs the company today, including the polygon system this talk is about.

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We’re excited to announce Jerry Enebeli (@jerry_enebeli), Co-Founder and CEO of Blnk Finance (@blnkfinance) as a speaker at SysConf 2026! His talk is titled “The Hot Account Problem: Keeping Ledgers Correct Under Heavy Contention.” While building Blnk Finance, an open-source ledger for financial products, the @blnkfinance team had to deal with the practical limits of locking, transaction ordering, queueing, retries, and balance consistency under contention. Some approaches worked well when contention was low and broke down once a small number of balances became disproportionately busy. This talk focuses on how they address this “hot account problem,” including failure modes, trade-offs, and the architecture that was ultimately chosen!
Jerry Enebeli is the CEO of Blnk Finance. "The Hot Account Problem: Keeping Ledgers Correct Under Heavy Contention" is the title of his talk at SysConf 2026.

ALT Jerry Enebeli is the CEO of Blnk Finance. "The Hot Account Problem: Keeping Ledgers Correct Under Heavy Contention" is the title of his talk at SysConf 2026.

Jerry is the Co-Founder and CEO of Blnk Finance, where he builds open-source ledger infrastructure for fintechs. He has spent almost a decade working on financial systems, including payments, banking infrastructure, and transaction processing engines.

ALT Jerry is the Co-Founder and CEO of Blnk Finance, where he builds open-source ledger infrastructure for fintechs. He has spent almost a decade working on financial systems, including payments, banking infrastructure, and transaction processing engines.

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21 days to go until SysConf 2026! Register now: events.ringcentral.com/event… #SysConf #SysConf26
21 days to go until SysConf 2026.

ALT 21 days to go until SysConf 2026.

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The countdown is on — one month to SysConf 2026! Register here: events.ringcentral.com/event… #SysConf #SysConf26
One month until SysConf 2026.

ALT One month until SysConf 2026.

SysConf 26 Schedule For Day 1 and 2. Day 1( Oct. 2nd): Unconference( attendee-driven sessions), Lightning talks and Networking sessions. Day 2(Oct. 3rd): Speaker-led, Networking and Panel Sessions.

ALT SysConf 26 Schedule For Day 1 and 2. Day 1( Oct. 2nd): Unconference( attendee-driven sessions), Lightning talks and Networking sessions. Day 2(Oct. 3rd): Speaker-led, Networking and Panel Sessions.

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I’m really excited about our talk roster this year + some new segments we’re adding (e.g. unconference sessions). I think this will be the most impactful edition of SysConf yet! So, everyone should register and tell their friends to register. It’s Fri, Oct 2nd & Sat, Oct 3rd — plan to attend both days 😁. The team will post more about our schedule in the coming weeks! ~ @_alternatewolf
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You know it’s been a GOOD SysConf event when the timeline has good comments. Want to share your thoughts next? Register and see you at #SysConf26: events.ringcentral.com/event… #SysConf
Ileri shares his thoughts about Sysconf. SysConf >>>>

ALT Ileri shares his thoughts about Sysconf. SysConf >>>>

Emmanuel learnt so much from SysConf 2025.

ALT Emmanuel learnt so much from SysConf 2025.

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Encrypting your data with a key is the easy part. The hard question is where you keep the key, store it next to the data and a breach hands over both. So instead of guarding one key, you encrypt it with another key. In his talk at the 2025 edition of SysConf, Allen Akinkunle (@allenakinkunle ), co-founder of InfraRed, walked through envelope encryption: a data key locks the data, and a key-encryption-key locks the data key, so the only secret you guard closely sits one level removed from everything it protects.
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We’re starting!
SysConf by SysDsgn
@sysconf_Aug 17
xitter.cf/i/spaces/1dxYlaBpeAAJX

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Set a reminder to attend our upcoming space where we talk about all things SysConf. We’ll talk about what SysConf by @sysdsgn aims to achieve. We’ll talk about previous editions and our plans for this edition. We’ll answer any questions members of our community have. And more. This edition will be hosted by @_alternatewolf and members of our organizing team. See you soon! xitter.cf/i/spaces/1dxYlaB… #SysConf #SysConf26

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If you've worked on an interesting technical problem and would like to share your work to help others learn, submit a proposal 😃
SysConf by SysDsgn
@sysconf_Aug 12
SysConf 2026 Call for Proposals closes in 10 Days. Submit your proposal: sessionize.com/sysconf-2026 #SysConf26 #SysConf
SysConf 2026 Call for Proposals closes in 10 days.

ALT SysConf 2026 Call for Proposals closes in 10 days.

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Registration for SysConf 2026 is still open: events.ringcentral.com/event…. Register, spread the word, tell a friend, and we’ll see (or hear) you at #SysConf26!

SysConf 2026 - Oct 02 | RingCentral Events

Get tickets to SysConf 2026, taking place Oct 2, 2026 to Oct 3, 2026. RingCentral Events is your source for engaging events and experiences.

events.ringcentral.com
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In most databases, storage and compute are intertwined; as your data grows, you keep buying bigger servers for just storage, but you end up also paying for compute you may not need. In his talk at the 2025 edition of SysConf, Anthony Alaribe (@tonialaribe) shared how that bill outgrew his team's entire revenue, and why they broke the "never build your own database" rule by building TimeFusion to store their data in object storage instead.
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When a program crashes, the OS can dump its entire memory space to disk, including every variable, function call, register value, heap memory and so on. In her talk at the 2025 edition of SysConf, Somtochi Onyekwere (@somtochiama) drew a parallel between core dumps and airplane black boxes, and how to use them to debug the state of a binary when it crashes.
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The CfP for SysConf 2026 is now open! If you have tackled interesting technical challenges (successfully or otherwise), are researching a frontier area or spent some time in the weeds of a technical area, we’d love to hear from you: sessionize.com/sysconf-2026. Our CfP is open until 11:59 pm (WAT) on August 22nd, 2026.
<CFP Image> SysConf 2026. Call for Proposals. Submit by 11:59 pm (WAT) on August 22nd, 2026.

ALT <CFP Image> SysConf 2026. Call for Proposals. Submit by 11:59 pm (WAT) on August 22nd, 2026.

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We have lots of plans for the @sysdsgn community and we're looking for a community manager to lead the efforts. Apply if that sounds interesting to you: forms.gle/CUfBsmh8Wi4rKA6Z9. PS: It's a volunteer role.

SysDsgn Community Manager

We're looking for a community manager for SysDsgn's technical community. What we're looking to get done Book Clubs Run Monthly Technical Sessions [1] Working with Program Leads to engage the commun...

docs.google.com
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