diff --git a/.github/workflows/lint_and_test.yaml b/.github/workflows/lint_and_test.yaml
index 1d870d5..a76325a 100644
--- a/.github/workflows/lint_and_test.yaml
+++ b/.github/workflows/lint_and_test.yaml
@@ -31,12 +31,11 @@ jobs:
         env:
           UV_PYTHON: ${{ matrix.python-version }}
 
-      - name: Run linters
-        run: make lint
+      - name: Run all checks
+        run: make all
         env:
           UV_PYTHON: ${{ matrix.python-version }}
 
-      - name: Run tests
-        run: make test
-        env:
-          UV_PYTHON: ${{ matrix.python-version }}
+      - name: Check if code was reformatted
+        if: always()
+        run: git diff --exit-code
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index c815a8f..4e06d7b 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -73,3 +73,10 @@ repos:
         language: system
         entry: make test
         pass_filenames: false
+
+      - id: make-dead-code
+        name: make dead-code (pre-push)
+        stages: [pre-push]
+        language: system
+        entry: make dead-code
+        pass_filenames: false
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b799215..6707cb5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,5 @@
+## [0.3.1-rc.1](https://github.com/disafronov/python-logging-objects-with-schema/compare/v0.3.0...v0.3.1-rc.1) (2025-12-10)
+
 ## [0.3.0](https://github.com/disafronov/python-logging-objects-with-schema/compare/v0.2.0...v0.3.0) (2025-12-09)
 
 ### Features
diff --git a/Makefile b/Makefile
index 8e3ef20..124cb20 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ PYTEST_CMD = uv run python -m pytest -v
 COVERAGE_OPTS = --cov --cov-report=term-missing --cov-report=html
 
 # Phony targets
-.PHONY: all clean format help install lint test test-coverage
+.PHONY: all clean dead-code format help install lint test test-coverage
 
 # Default target
 help: ## Show this help message
@@ -28,6 +28,10 @@ lint: ## Run linting tools
 	@echo "Running linting tools..."
 	uv run black --check . && uv run isort --check-only . && uv run flake8 . && uv run mypy . && uv run bandit -r -c pyproject.toml .
 
+dead-code: ## Check for dead code using vulture
+	@echo "Checking for dead code..."
+	uv run vulture
+
 # Testing
 test: ## Run tests
 	@echo "Running tests..."
@@ -38,7 +42,7 @@ test-coverage: ## Run tests with coverage
 	$(PYTEST_CMD) $(COVERAGE_OPTS)
 
 # Combined operations
-all: format lint test ## Run format, lint, and test
+all: format lint test dead-code ## Run format, lint, test, and dead-code check
 	@echo "All checks completed successfully!"
 
 # Maintenance
diff --git a/pyproject.toml b/pyproject.toml
index 887e471..71b49c8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "uv_build"
 
 [project]
 name = "logging-objects-with-schema"
-version = "0.3.0"
+version = "0.3.1rc1"
 description = "Proxy logging wrapper that validates extra fields against a JSON schema."
 readme = "README.md"
 requires-python = ">=3.10"
@@ -45,7 +45,8 @@ classifiers = [
   "flake8-pyproject>=1.2.3",
   "mypy>=1.18.1",
   "bandit>=1.8.6",
-  "pre-commit>=3.5.0"
+  "pre-commit>=3.5.0",
+  "vulture>=2.0.0"
 ]
 
   [project.urls]
@@ -115,3 +116,9 @@ skip_covered = false
 
 [tool.coverage.html]
 directory = "htmlcov"
+
+[tool.vulture]
+min_confidence = 80
+exclude = [ "__pycache__" ]
+ignore_names = [ "cls" ]
+paths = [ "src" ]
diff --git a/src/logging_objects_with_schema/schema_loader.py b/src/logging_objects_with_schema/schema_loader.py
index 168cb58..f51757b 100644
--- a/src/logging_objects_with_schema/schema_loader.py
+++ b/src/logging_objects_with_schema/schema_loader.py
@@ -177,24 +177,31 @@ def _check_cached_found_file_path() -> Path | None:
     When a schema file was found, its absolute path is cached as CWD-independent.
     This function checks if the cached path still exists on disk.
 
+    Note: This function must be called while holding _path_cache_lock.
+
     Returns:
         Cached path if file still exists, None if file was deleted (cache invalidated).
     """
     global _resolved_schema_path
 
-    with _path_cache_lock:
-        if _resolved_schema_path is None:
-            return None
-
-        # Schema file was found, absolute path doesn't depend on CWD
-        # Return it if it still exists
-        if _resolved_schema_path.exists():
-            return _resolved_schema_path
+    if _resolved_schema_path is None:
+        return None
 
-        # Cached file no longer exists; invalidate cache so caller will re-search
-        _resolved_schema_path = None
+    # Check if this is actually a found file cache (not missing file cache)
+    # by checking _cached_cwd. We don't need 'global' here since we only read it.
+    if _cached_cwd is not None:
+        # This path was cached as missing file, not found file
         return None
 
+    # Schema file was found, absolute path doesn't depend on CWD
+    # Return it if it still exists
+    if _resolved_schema_path.exists():
+        return _resolved_schema_path
+
+    # Cached file no longer exists; invalidate cache so caller will re-search
+    _resolved_schema_path = None
+    return None
+
 
 def _check_cached_missing_file_path() -> Path | None:
     """Check if cached path for a missing file is still valid.
@@ -202,26 +209,27 @@ def _check_cached_missing_file_path() -> Path | None:
     When a schema file was not found, a path based on CWD is cached.
     This function checks if CWD has changed since caching.
 
+    Note: This function must be called while holding _path_cache_lock.
+
     Returns:
         Cached path if CWD unchanged, None if CWD changed (cache invalidated).
     """
     global _resolved_schema_path, _cached_cwd
 
-    with _path_cache_lock:
-        if _resolved_schema_path is None or _cached_cwd is None:
-            return None
+    if _resolved_schema_path is None or _cached_cwd is None:
+        return None
 
-        # Cached path is based on CWD when file was not found,
-        # check if CWD changed
-        current_cwd = _get_current_working_directory()
-        if current_cwd != _cached_cwd:
-            # CWD changed, invalidate cache and re-search from new CWD
-            _resolved_schema_path = None
-            _cached_cwd = None
-            return None
+    # Cached path is based on CWD when file was not found,
+    # check if CWD changed
+    current_cwd = _get_current_working_directory()
+    if current_cwd != _cached_cwd:
+        # CWD changed, invalidate cache and re-search from new CWD
+        _resolved_schema_path = None
+        _cached_cwd = None
+        return None
 
-        # CWD unchanged, return cached path
-        return _resolved_schema_path
+    # CWD unchanged, return cached path
+    return _resolved_schema_path
 
 
 def _cache_and_return_found_path(found_path: Path) -> Path:
@@ -800,8 +808,8 @@ def _compile_schema_internal(
     given path and forbidden keys set has been observed (including the cases
     when it is missing or invalid), subsequent calls always return the cached
     result without re-reading or re-compiling the schema. To pick up on-disk
-    changes to the schema, the application must restart the process. See the
-    README section \"Schema caching and thread safety\" for more details.
+    changes to the schema, the application must restart the process. The schema
+    is cached process-wide and is thread-safe.
 
     Args:
         forbidden_keys: Additional forbidden root keys to check against.
diff --git a/uv.lock b/uv.lock
index dd2a94c..6a702a0 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1394,7 +1394,7 @@ version = "0.6.3"
 
 [[package]]
 name = "logging-objects-with-schema"
-version = "0.3.0"
+version = "0.3.1rc1"
 
   [package.source]
   editable = "."
@@ -1426,6 +1426,9 @@ name = "pytest"
 [[package.optional-dependencies.dev]]
 name = "pytest-cov"
 
+[[package.optional-dependencies.dev]]
+name = "vulture"
+
   [package.metadata]
   provides-extras = [ "dev" ]
 
@@ -1474,6 +1477,11 @@ name = "pytest-cov"
     marker = "extra == 'dev'"
     specifier = ">=4.0.0"
 
+    [[package.metadata.requires-dist]]
+    name = "vulture"
+    marker = "extra == 'dev'"
+    specifier = ">=2.0.0"
+
 [[package]]
 name = "markdown-it-py"
 version = "4.0.0"
@@ -2747,3 +2755,26 @@ version = "20.35.4"
   hash = "sha256:c21c9cede36c9753eeade68ba7d523529f228a403463376cf821eaae2b650f1b"
   size = 6_005_095
   upload-time = "2025-10-29T06:57:37.598Z"
+
+[[package]]
+name = "vulture"
+version = "2.14"
+
+  [package.source]
+  registry = "https://pypi.org/simple"
+
+  [[package.dependencies]]
+  name = "tomli"
+  marker = "python_full_version < '3.11'"
+
+  [package.sdist]
+  url = "https://files.pythonhosted.org/packages/8e/25/925f35db758a0f9199113aaf61d703de891676b082bd7cf73ea01d6000f7/vulture-2.14.tar.gz"
+  hash = "sha256:cb8277902a1138deeab796ec5bef7076a6e0248ca3607a3f3dee0b6d9e9b8415"
+  size = 58_823
+  upload-time = "2024-12-08T17:39:43.319Z"
+
+  [[package.wheels]]
+  url = "https://files.pythonhosted.org/packages/a0/56/0cc15b8ff2613c1d5c3dc1f3f576ede1c43868c1bc2e5ccaa2d4bcd7974d/vulture-2.14-py2.py3-none-any.whl"
+  hash = "sha256:d9a90dba89607489548a49d557f8bac8112bd25d3cbc8aeef23e860811bd5ed9"
+  size = 28_915
+  upload-time = "2024-12-08T17:39:40.573Z"