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I run a Svelte web-app that streams live readings from user-owned sensors. Each time a new sensor is registered the backend writes a user-to-device mapping into Redis; this mapping is then used to route all subsequent messages. Right now the Redis part is failing. The web-app itself loads, the registration call completes, and a key does appear in Redis, yet the association is not updated correctly so the new sensor’s traffic never reaches the UI. In short, the Redis server is the bottleneck and it isn’t updating with new sensors as expected. What I need from you: • Trace and fix whatever in Redis (key pattern, Lua script, TTL, race condition, Pub/Sub channel, etc.) is preventing a clean update when a sensor is added. • Prove the fix by registering multiple new sensors and showing their data flowing through to the Svelte front-end in real time. • Hand over the patched code or configuration plus a short summary of the root cause and the changes made. If you’re comfortable debugging Redis (stand-alone instance, not clustered) and can work smoothly alongside a Svelte/Node stack, this should be a focused task. I’m ready to get the patch merged and live as soon as the routing is rock-solid again.
Projekt-ID: 40261945
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62 Freelancer bieten im Durchschnitt $34 USD/Stunde für diesen Auftrag

I have over a decade of experience in web and mobile development, including expertise in fixing complex backend issues like the one you're facing with Redis. I understand that your Svelte web-app is struggling to update the Redis server correctly, causing a bottleneck in routing new sensor data to the UI. In previous projects, I have successfully debugged and fixed similar issues with real-time data streaming, ensuring smooth communication between backend systems like Redis and front-end frameworks like Svelte. My track record in troubleshooting and resolving database-related challenges will enable me to trace and fix the root cause preventing a clean update when a sensor is added. With my in-depth knowledge of Redis key patterns, Lua scripts, and Pub/Sub channels, I am confident in delivering a robust solution that proves the fix by showcasing multiple new sensors' data flowing seamlessly to your Svelte front-end in real time. Rest assured, I will hand over the patched code or configuration along with a detailed summary of the changes made. If you are looking to get your routing rock-solid and merge the patch swiftly, I am here to collaborate smoothly with your Svelte/Node stack. Let's work together to resolve this issue promptly and ensure your web-app is back on track.
$40 USD in 15 Tagen
8,9
8,9

Dear , We carefully studied the description of your project and we can confirm that we understand your needs and are also interested in your project. Our team has the necessary resources to start your project as soon as possible and complete it in a very short time. We are 25 years in this business and our technical specialists have strong experience in PHP, Linux, NoSQL Couch & Mongo, Debugging, Node.js, Redis, Web Development, Svelte and other technologies relevant to your project. Please, review our profile https://www.freelancer.com/u/tangramua where you can find detailed information about our company, our portfolio, and the client's recent reviews. Please contact us via Freelancer Chat to discuss your project in details. Best regards, Sales department Tangram Canada Inc.
$30 USD in 5 Tagen
8,8
8,8

Hello, We've thoroughly reviewed your project concerning the Redis sensor integration issue within your Svelte web-app. It’s clear that the current Redis setup isn't updating the user-to-device mapping correctly, causing a traffic bottleneck. Our task is to trace and rectify this, ensuring smooth data flow from new sensors to your UI. We've previously tackled a similar challenge where Redis was integral to routing live data streams within a dynamic web application. By diagnosing the underlying issues such as TTL misconfigurations and race conditions, we successfully optimized the data flow. With over 8 years of experience and a focus on AI-first product development, we specialize in seamless integration and debugging of complex systems like Redis alongside Svelte/Node stacks. Our expertise in real-time data processing and robust backend engineering ensures we can swiftly resolve this bottleneck. Let's discuss your project in further detail. Please message us, and we'll prepare a comprehensive proposal tailored to your needs within 24 hours. Looking forward to collaborating with you. Best regards, Puru Gupta
$60 USD in 40 Tagen
7,1
7,1

As an experienced Full Stack Developer with expertise in Svelte, Node.js, and Redis, I am well-equipped to fix your Redis sensor integration flawlessly. With proven success in identifying and resolving the most intricate bugs and bottlenecks, I am confident in my ability to trace and rectify the root cause of your issue. My familiarity with Redis' key patterns, Lua scripts, TTLs, race conditions, and Pub/Sub channels will enable me to deliver a well-rounded solution for your streaming application. Furthermore, my proficiency in handling REST API integrations coupled with web app development using Node.js adds more value to my candidacy for this task. I've not only mastered backend architectures but have successfully implemented real-time features and push notification systems. These skills are precisely what you need for your Svelte/Node stack as they demonstrate my ability to ensure seamless communication between your sensors and UI. Lastly, my deep knowledge of open-source technologies like Redis and CMS frameworks including WordPress assures that you'll receive a reliable solution that harmoniously aligns with your existing architecture. My thoroughness in handing over the patched code or configuration fortified with a summary of root cause analysis will contribute to maintaining the routing integrity of your application going forward. Let's get started fixing this issue and restoring the smooth performance your app deserves!
$38 USD in 40 Tagen
6,6
6,6

Node + Redis debugging is something I know well. The symptoms you describe - key appears but routing doesn't update - usually points to a key structure mismatch, a pub/sub channel not being subscribed correctly on the backend, or a race condition between when the key is written and when the routing logic reads it. I'd start with redis-cli to trace exactly what's being written vs what the routing code expects, then narrow it from there. Once I can see both sides of the flow it should be a straightforward diagnosis. Comortable with Svelte/Node stacks. Happy to jump on this and get you a root cause + fix with sensor data flowing end-to-end. - Usama
$45 USD in 45 Tagen
6,7
6,7

Hello, Could you imagine seamlessly integrating new sensor data into your Svelte web-app without any hiccups? My expertise in Redis debugging and experience with Svelte/Node stacks ensure a targeted approach to resolving your integration issues. Let's discuss how I can help restore your sensor functionality and improve user experience. Best, Smith
$38 USD in 40 Tagen
6,4
6,4

Hi there, Good morning I am Talha. I have read you project details i saw you need help with Debugging, Linux, Svelte, Web Development, NoSQL Couch & Mongo, Node.js, PHP and Redis I am excited to submit my proposal for your project, which focuses on a comprehensive project plan. To begin, we will thoroughly understand your project's objectives and requirements, ensuring alignment on scope and goals. We will provide a clear and realistic project timeline with manageable milestones to ensure timely completion Please note that the initial bid is an estimate, and the final quote will be provided after a thorough discussion of the project requirements or upon reviewing any detailed documentation you can share. Could you please share any available detailed documentation? I'm also open to further discussions to explore specific aspects of the project. Thanks Regards. Talha Ramzan
$25 USD in 30 Tagen
5,8
5,8

I understand the issue is that new sensor registrations create Redis keys but don’t update the user-to-device mapping correctly, blocking real-time data routing to your Svelte app. This usually points to a problem in how the Redis keys are set or updated, possibly a TTL resetting unexpectedly, a race condition in Lua scripts, or Pub/Sub channels not triggering updates. I’ve resolved similar Redis integration bugs where the key format or update logic caused silent failures in streaming sensor data, ensuring reliable real-time updates on the front end. To start, I’ll check your key patterns, TTL settings, and any Lua scripts you use to see if they overwrite or fail to update mappings. Then, I’ll verify Pub/Sub channels deliver messages as expected. Would you be able to share your current Redis key structure and any Lua scripts involved? This will speed up pinpointing the exact cause. Once fixed, I’ll register multiple test sensors to confirm their data flows into the UI smoothly, then deliver the updated code and a clear summary. Ready to dive in and get your sensor routing stable right away.
$25 USD in 7 Tagen
5,2
5,2

With my extensive experience in building and troubleshooting robust web applications, I am confident that I can identify and rectify the issues with your Redis server. I understand that the failure to update correctly in Redis is causing a bottleneck in your application. Drawing on my solid grasp of Redis and its different components such as key pattern, Lua script, TTL, race condition, Pub/Sub channel, I can quickly pinpoint the root cause and make the necessary changes to ensure a clean update when a new sensor is added. A mainstay of my skill set is my ability to be agile with various tech stacks like your Svelte/Node framework. This affords me a versatile approach to your specific task. If chosen, I will begin by thoroughly tracing and analyzing your current code base; coming up with a focused plan without undue time loss for you. Reassuringly, I am aware of the pressing need to get this patch merged and live as soon as routing becomes seamless again for your users. Ultimately, I am not just offering to upgrade a functionality but also leaving you with an explanation of what went wrong along with the applied solutions. Rest assured that well after the patch updates have been completed, my support will keep going on making sure everything remains rock-solid. I eagerly look forward to working on this project with you!
$38 USD in 40 Tagen
5,3
5,3

Greeting! Fixing Redis routing issues in a live Svelte/Node sensor pipeline is exactly the kind of deep debugging we handle. We are a team of 62 professionals with over 9 years of experience in Redis, real-time messaging, and Node-based data flows. Here's how we can help: Trace the full user-to-device mapping flow in Redis to identify key pattern, TTL, Lua, or Pub/Sub issues Reproduce the failure scenario and inspect race conditions or stale cache behavior Patch the Redis logic to ensure reliable updates when new sensors register Validate by registering multiple sensors and demonstrating real-time data reaching the Svelte UI Provide clean patched code/config plus a concise root-cause report Recommend safeguards (atomic ops, expiries, monitoring) to prevent regressions To pinpoint quickly, could you share your current Redis key schema and whether Pub/Sub or Streams are involved? Also, is registration handled via a Lua script or standard Node commands? We’re ready to make your routing rock-solid and get sensor data flowing to the front end again without delay.
$38 USD in 40 Tagen
3,3
3,3

I understand you require a fix for the Redis integration in your Svelte web-app where new sensor registrations create keys in Redis but the device-to-user mapping isn’t updating correctly, causing sensor data to fail routing to the UI. You need someone to trace and resolve issues like key patterns, Lua scripts, TTLs, or Pub/Sub channels to ensure real-time updates flow seamlessly. With over 15 years of experience and 200+ projects completed, I specialize in full stack development including Node.js, PHP, Redis, and Linux environments, working extensively on real-time data pipelines and NoSQL databases like MongoDB. My background aligns well with debugging Redis in standalone setups and integrating with modern front-ends like Svelte. I will start by reviewing your Redis key patterns, Lua scripts, and Pub/Sub logic to identify race conditions or TTL misconfigurations blocking updates. Once fixed, I will validate the solution by registering multiple sensors and confirming live data arrives consistently in the Svelte UI. I expect to deliver a patched codebase with a concise root cause summary within a few hours of access. Feel free to share more details so we can get your sensor data routing back on track smoothly.
$28 USD in 7 Tagen
2,6
2,6

I hope you're doing well! My name is Nawal, and I bring over nine years of experience in [ProjectTitle]. After carefully reviewing your project brief, I’m confident that I understand your needs and can deliver exactly what you're looking for. Here’s what I offer: ✅ Multiple initial drafts within 24 to 48 hours ✅ Unlimited revisions until you're 100% satisfied ✅ Final delivery in all required formats, including the editable master file and full copyright ownership You can check out my portfolio and past work here: ? Freelancer Profile – eaglegraphics247 I’d love to discuss your project further and explore how we can make your vision a reality. Let me know a convenient time for a quick chat! Looking forward to working together. Best regards, Nawal
$25 USD in 2 Tagen
2,1
2,1

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