Memory leak during configuration update

[flymedllva]

Component(s)

router

Component version

wgc version

controlplane version

router version

v0.82.1

What happened?

Description

When updating the router configuration using r.updateServerAndStart, memory consumption increases.

Enough N times, make the schema puller download and apply a new schema, each time a new schema is applied (they must be different) the memory consumption of the application increases.

This is especially noticeable on large schematics larger than 20 mb.

Steps to Reproduce

I made an example frequently updating the schema, after a few minutes of router operation the memory consumption increases even on a small schema

In order to reproduce, clone the repository and start the router

https://github.com/flymedllva/cosmo-memory-leak-during-configuration-update

cd router && make dev

Commit necessary to reproduce the problem: flymedllva@880955e

Environment information

OS: 14.4 (23E214)
Package Manager: npm
Compiler(if manually compiled): go version go1.22.1 darwin/arm64

Router configuration

version: "1"

# General router options
graph:
  name: "production"
  token: ""

log_level: "info"
listen_addr: "localhost:3002"
playground_enabled: true
introspection_enabled: true
json_log: true
shutdown_delay: 15s
grace_period: 20s
poll_interval: 10s
health_check_path: "/health"
readiness_check_path: "/health/ready"
liveness_check_path: "/health/live"
router_config_path: "config.json"

cors:
  allow_origins: ["*"]
  allow_methods:
    - HEAD
    - GET
    - POST
  allow_headers:
    - Origin
    - Content-Length
    - Content-Type
  allow_credentials: true
  max_age_minutes: 5m

# Config for custom modules   
# See "https://cosmo-docs.wundergraph.com/router/custom-modules" for more information   
modules:
  myModule:
    # Arbitrary values, unmarshalled by the module
    value: 1

Router execution config

No response

Log output

No response

Additional context

[github-actions]

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[StarpTech]

Hi @flymedllva please provide a reproducible example. We can't investigate with this little information. Waiting for your feedback!

[flymedllva]

@StarpTech Enough N times, make the schema puller download and apply a new schema, each time a new schema is applied (they must be different) the memory consumption of the application increases.

[flymedllva]

@StarpTech hi, I've updated the issue description with a handy example to reproduce the issue, have a look again

Thanks

[StarpTech]

@flymedllva thank you. We'll take a look.