@PutMapping and @DeleteMapping in Spring Boot - Performance & Optimization

Performance: @PutMapping and @DeleteMapping

MEDIUM IMPACT

These annotations affect server request handling speed and network payload size, impacting how fast the client sees updates or deletions.

Updating or deleting resources via REST endpoints

Spring Boot

@PutMapping("/resource/{id}")
public ResponseEntity<?> updateResource(@PathVariable Long id, @RequestBody Resource resource) {
    // update logic
    return ResponseEntity.ok().build();
}

@DeleteMapping("/resource/{id}")
public ResponseEntity<?> deleteResource(@PathVariable Long id) {
    // delete logic
    return ResponseEntity.noContent().build();
}

Using correct HTTP verbs clarifies intent, enables better caching, and reduces unnecessary data transfer, improving responsiveness.

📈 Performance GainReduces network overhead and improves client-side caching, lowering interaction delay.

Updating or deleting resources via REST endpoints

Spring Boot

@PostMapping("/updateResource")
public ResponseEntity<?> updateResource(@RequestBody Resource resource) {
    // update logic
    return ResponseEntity.ok().build();
}

@PostMapping("/deleteResource")
public ResponseEntity<?> deleteResource(@RequestParam Long id) {
    // delete logic
    return ResponseEntity.ok().build();
}

Using @PostMapping for update and delete operations misuses HTTP verbs, causing caching issues and unclear intent, which can slow client-server interaction and increase network overhead.

📉 Performance CostIncreases network latency due to improper caching and forces clients to revalidate more often.

Performance Comparison

Pattern	Server Processing	Network Overhead	Caching Impact	Verdict
Using @PostMapping for update/delete	Standard processing	Higher due to unclear intent	Poor caching, more revalidation	[X] Bad
Using @PutMapping and @DeleteMapping correctly	Optimized for intent	Lower due to proper semantics	Better caching, less revalidation	[OK] Good

Rendering Pipeline

These annotations define HTTP methods that the server uses to route requests. Proper use affects how quickly the server processes requests and sends responses, impacting client interaction speed.

→Server Request Routing

→Request Processing

→Response Generation

⚠️ BottleneckRequest Processing when server logic is inefficient or uses incorrect HTTP methods causing extra validation.

Core Web Vital Affected

INP

These annotations affect server request handling speed and network payload size, impacting how fast the client sees updates or deletions.

Optimization Tips

1Use @PutMapping for updating existing resources to improve caching and clarity.

2Use @DeleteMapping for deleting resources to reduce network overhead and improve client understanding.

3Avoid using @PostMapping for update or delete operations to prevent caching issues and increased latency.

Performance Quiz - 3 Questions

Why is using @PutMapping better than @PostMapping for updating resources?

A Because POST is only for creating resources and cannot update.

B Because PUT clearly signals an update operation, enabling better caching and network efficiency.

C Because PUT requests are always faster than POST requests.

D Because POST requests do not support request bodies.

DevTools: Network

How to check: Open DevTools, go to Network tab, perform update or delete requests, and inspect the HTTP method and response headers.

What to look for: Check that requests use PUT or DELETE methods and observe caching headers to confirm efficient network usage.