1,305 questions
Best practices
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Multi-provider RPC failover in Rust - circuit breaker vs retry-only for blockchain nodes?
I'm building a production RPC transport layer in Rust that connects to
multiple blockchain RPC providers (Alchemy, Infura, QuickNode, public nodes)
with automatic failover.
The challenge: not all ...
Best practices
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2
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121
views
Rebalancing Traffic In Leaderless Distributed Architecture
Using Go I am creating an in-memory distributed store similar to Cassandra.
I have concept of storage_node with get_by_key and put_key_value. When a new node starts it starts to gossip with a seed ...
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1
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146
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Should Post and PostLike be separate microservices, and how to validate entity existence across services?
I'm designing a microservices architecture for a social media–like system and need guidance on service boundaries and cross-service validation.
Current Design
I have two separate microservices:
Post ...
Best practices
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60
views
Architectural pattern for binding user authorization to demonstrated comprehension before system execution?
In many distributed systems, user authorization is treated as sufficient proof of intent.
Examples:
Clicking “Approve”
Signing digitally
Submitting a confirmation request
Triggering a smart contract ...
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32
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Handling log inconsistencies in Raft: how should a follower reconcile conflicting entries?
I'm trying to learn Raft, but some edge cases I find hard to understand.
Here’s an example scenario:
The leader has the following log:
1: A, 2: B, 3: C
A new entry arrives: 4: D. The leader will ...
Advice
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1
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66
views
What is the chance of losing a redis pub/sub message?
I understand that message loss in Redis Pub/Sub is possible and is considered normal behavior. The probability is low, but not zero.
What I’m trying to understand is how often this can realistically ...
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Advice
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2
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90
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How to make devices discover each other using WIFI
What's the best way to allow programs to discover each other on the network?
Let's say we are writing a system that tracks the usage of computers over the network.
We have an agent program that sends ...
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65
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How do I redesign a broken multi-service system where the entry point and child services are out of sync?
I recently joined a startup that has a pretty messy backend setup, and I’ve been assigned to sort it out.
Here’s the situation:
There’s one main entry point (a federation/onboarding service) that’s ...
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1
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245
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Should I store Stripe Subscription details in local DB or query Stripes API to determine if a user is subscribed?
I have the following requirement.
A website (lets call it Website A) where I sell subscription plans for my SaaS
Payments are handled with Stripe
I am using an authentication service (Auth0) so users ...
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80
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ADKG-based threshold ECDSA signature recovers different address per transaction—how to compute aggregate `r` and signature parameters?
Background
I’m implementing Asynchronous Distributed Key Generation (ADKG) over secp256k1 so that N nodes collectively hold a threshold private key. After DKG each node has a secret share. To sign an ...
- 121
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48
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gRPC: HTTP-level resilience handler (retries)?
Should gRPC clients implement an HTTP-level resilience handler? Or only rely on the gRPC-level RetryPolicy? Why/why not?
For example, if the server responds with a 5xx status code (unexpected but ...
- 121
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0
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52
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Is there a problem having min.insync.replicas < half the RF?
Many examples of Kafka topic configuration have RF = 3, min.insync.replicas = 2.
In the case of a cluster of 5 brokers, if we use RF = 5, should min.insync.replicas = 3? That seems "natural" ...
- 130
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1
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154
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How do I limit the count of rows in a result set in Postgres without unnecessary locking?
This question is inspired by a 'general admission' variant of the common 'event ticketing' System Design interview question. Critically in this version, the user does not select a seat - they only say ...
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1
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75
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is last write wins redundant for immutable keys?
In the book Designing Data-Intensive Applications > chapter-5 > Leaderless replication > Detecting Concurrent Writes, below is what Author says while talking about Last write wins (LWW)
The ...
- 1,394
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96
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Apache JMeter Master Slave Setup on Azure VM
I am new to JMeter Distributed Environment setup. I dont have any knowledge on how to setup the master slave configuration. I just have the information that we have a Master VM and we can spin up ...
