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Quick access to bookmarked interview challenges, architecture articles, peer profiles, and reusable code snippets.

5 Bookmarked Items

Organized across 4 categories

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Design Scalable Rate Limiter

System Design

Distributed rate limiter using Redis Token Bucket & Sliding Window. Bookmark for upcoming System Design interviews.

#Redis#Distributed Systems#Hard

Saved 2 days ago

Open

LRU Cache Implementation

DSA

Double linked list + HashMap O(1) eviction logic. Revisit and optimize memory usage.

#Linked List#Hash Table#Hard

Saved 3 days ago

Open

Microservices Monitoring Dashboard with Prometheus & Grafana

Architecture

Architecture breakdown by Alex Kumar on lightweight metrics visualization in Kubernetes.

#DevOps#Kubernetes#Backend

Saved 4 days ago

Open

Distributed Redis Lock with Auto-Renewal

Code Snippet

Production-ready Go lock helper with context cancellation and heartbeat lease renewal.

#Go#Redis#Concurrency

Saved 5 days ago

Open

func AcquireLock(ctx context.Context, client *redis.Client, key string, ttl time.Duration) (string, error) {
    token := uuid.New().String()
    ok, err := client.SetNX(ctx, "lock:"+key, token, ttl).Result()
    if err != nil || !ok {
        return "", ErrLockBusy
    }
    return token, nil
}

David Lindqvist

Developer Profile

Principal Systems Architect working on Rust, WebAssembly and eBPF kernel network stacks.

#Rust#Systems#Wasm

Saved 1 week ago

Open

David Lindqvist

@dlindqvist • EdgeCloud Technologies

View Profile

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Coding Problems2

Articles & Posts1

Code Snippets1

Saved Developers1

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