└── protwords.txt
```

## Important Notes

### No Database Changes Required

- Language configuration is entirely file-based
- No database or OpenSearch index updates needed
- Settings are loaded at application startup and cached

### Fallback Mechanism

If a translation is missing in `fess_label_[locale].properties`, Fess automatically falls back to the base `fess_label.properties` (English).

- **Utility Classes** - All core functionality exposed through static utility methods for easy access

### Performance Optimizations
- **Caching** - Bean descriptors and reflection metadata are cached for improved performance
- **Lazy initialization** - Resources and expensive operations are initialized only when needed  

		// value is cached we should attempt to invalidate it if such calls
		// were attempted. This can lead to false success under certain conditions
		// - this change attempts to avoid stale information if the underlying
		// transport is already down.
		return "", errDiskNotFound
	}

	// This call should never be over the network, this is always
	// a cached value - caller should make sure to use this

    protected static final String GROOVY_MATCHER = "groovy:";

    /** Map of path mappings by process type. */
    protected final Map<String, List<PathMapping>> pathMappingMap = new HashMap<>();

    /** Cached list of path mappings. */
    protected volatile List<PathMapping> cachedPathMappingList = null;

    /**
     * Initializes the path mapping helper.
     */
    @PostConstruct
    public void init() {

        if (lookup == null) {
            return customLifecycles != null ? customLifecycles : new HashMap<>();
        }

        // Lifecycles cannot be cached as extensions might add custom lifecycles later in the execution.
        try {
            return registry != null

                masked.put(entry.getKey(), "****");
            } else if (value instanceof String) {
                masked.put(entry.getKey(), maskSensitiveData((String) value));
            } else {
                masked.put(entry.getKey(), value);
            }
        }

        return masked;
    }

    private String maskUsername(String username) {

That way, your application won't have to generate the schema every time a user opens your API docs.

It will be generated only once, and then the same cached schema will be used for the next requests.

{* ../../docs_src/extending_openapi/tutorial001_py39.py hl[13:14,25:26] *}

### Override the method { #override-the-method }

        return String.format("BufferCache: queued=%d, max=%d, utilization=%.1f%%", queueSize.get(), MAX_BUFFERS,
                (queueSize.get() * 100.0 / MAX_BUFFERS));
    }

    /**
     * Clear all cached buffers (for testing or cleanup)
     */
    public static void clearCache() {
        bufferQueue.clear();
        queueSize.set(0);
    }

    firstException = expected;
    // Second time should also fail, with a cached causal chain.
    expected = assertThrows(PotentialDeadlockException.class, () -> lockA.lock());
    checkMessage(expected, "LockB -> LockA", "LockA -> LockB");
    // The causal chain should be cached.
    assertSame(firstException.getCause(), expected.getCause());
    // lockA should work after lockB is released.

		if len(dui.BucketsUsage) > 0 {
			internalLogOnceIf(GlobalContext, fmt.Errorf("unable to retrieve usage information for bucket: %s, relying on older value cached in-memory: err(%v)", bucket, err), "bucket-usage-cache-"+bucket)
		} else {