Load-testing-related performance improvements - #3697

Merged

j-chmielewski merged 15 commits into

devfrom

Sep 21, 2026

j-chmielewski commented Sep 18, 2026

Contributor

Related issue: https://github.com/DefGuard/internal/issues/201

Added configurable database pool sizing for heavily loaded instances.
Optimized mass device/network readdressing by prefetching active sessions in batches and avoiding N+1
queries.
Parallelized Core-Proxy BIDI request handling.
Added a global BIDI concurrency limit of 1024 requests per ProxyManager.
Removed obsolete mut usage.

j-chmielewski added 12 commits

September 18, 2026 10:10


          larger pg pool

7e3937c


          fix n+1 by prefetching active sessions before network updates

506878b


          don't take unnecessary mut's

7f50b57


          add db pool size config paramater

7fcade8


          async BIDI stream messages handling

7db549e


          bidi concurrency tests

8d0f8a7


          remove unnecessary mut markers from tests

be62183


          default db pool size = 10

6a254ce


          Merge branch 'dev' into load-testing

00bc41a


          closed semaphores don't scare me

2f35bd1


          don't allow db_pool_size = 0

79643bb


          limit concurrent tokio tasks to avoid memory leaks

7d2f26a

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crates/defguard_common/src/db/models/vpn_client_session.rs Outdated

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crates/defguard_common/src/db/models/vpn_client_session.rs Outdated

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crates/defguard_common/src/config.rs

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crates/defguard_proxy_manager/src/tests/common/mod.rs Outdated

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crates/defguard_proxy_manager/src/handler.rs Outdated

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crates/defguard_proxy_manager/src/lib.rs Outdated

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crates/defguard_proxy_manager/src/lib.rs Outdated

j-chmielewski added 3 commits

September 18, 2026 14:21


          review fixes; sqlx fixtures

ba66a59


          fix error message

3311e5d


          fix comment

2547d81

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j-chmielewski merged commit 13d6a8e into dev

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j-chmielewski deleted the load-testing branch

September 21, 2026 06:32

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