// Mark channel as failed
        failedChannel.setState(ChannelState.FAILED);
        
        // Get or create failover state
        FailoverState state = failoverStates.computeIfAbsent(
            failedChannel.getChannelId(), 
            FailoverState::new
        );
        
        // Redistribute pending operations
        redistributePendingOperations(failedChannel);
        

        }

        // Track connection metrics
        String key = getConnectionKey(address, port);
        connectionMetrics.computeIfAbsent(key, k -> new ConnectionMetrics()).recordConnection();
        activeConnections.incrementAndGet();

        if (nonPooled) {
            this.nonPooledConnections.offer(conn);
        } else {

        // or DiSNI-specific methods

        if (buffer.isDirect()) {
            // Assign a unique address to each buffer instance
            return bufferAddresses.computeIfAbsent(buffer, b -> addressCounter.getAndIncrement());
        } else {
            throw new IllegalArgumentException("Only direct ByteBuffers are supported for RDMA");
        }
    }

    /**

     * @param supplier the supplier will compute the new value
     * @return the session data associated with the key
     */
    @Nullable
    <T> T computeIfAbsent(@Nonnull Key<T> key, @Nonnull Supplier<T> supplier);

    /**
     * Create a key using the given class as an identifier and as the type of the object.
     */
    static <T> Key<T> key(Class<T> clazz) {

        // Mark channel as failed
        failedChannel.setState(ChannelState.FAILED);

        // Get or create failover state
        FailoverState state = failoverStates.computeIfAbsent(failedChannel.getChannelId(), FailoverState::new);

        // Redistribute pending operations
        redistributePendingOperations(failedChannel);

        if (StringUtil.isBlank(value)) {
            return Collections.emptyList();
        }
        return split(value, ",").get(stream -> stream.map(String::trim)//
                .map(s -> clientRuleCache.computeIfAbsent(s, t -> {
                    final String[] values = t.split(":", 2);
                    if (values.length != 2) {
                        return null;
                    }

                responseHeaders.put(name, values);
            }

            @Override
            public void addHeader(String name, String value) {
                responseHeaders.computeIfAbsent(name, k -> new ArrayList<>()).add(value);
            }

            @Override
            public void setIntHeader(String name, int value) {
            }

            @Override

        String key = type.name();
        long currentWindow = System.currentTimeMillis() / rateLimitWindow;
        String windowKey = key + "_" + currentWindow;

        AtomicLong counter = rateLimitCounters.computeIfAbsent(windowKey, k -> new AtomicLong(0));
        long currentCount = counter.incrementAndGet();

        // Clean up old windows periodically
        if (currentCount == 1) {

            artifacts.put(getKey(spec.artifact), spec);

            String key = spec.artifact.getDependencyConflictId();
            List<ArtifactVersion> artifactVersions = versions.computeIfAbsent(key, k -> new ArrayList<>());
            if (spec.artifact.getVersion() != null) {
                artifactVersions.add(new DefaultArtifactVersion(spec.artifact.getVersion()));
            }
        }

        for (String key : sessionKeys.keySet()) {
            if (key.contains(".v")) {
                String baseSession = key.substring(0, key.indexOf(".v"));
                sessionArchives.computeIfAbsent(baseSession, k -> new java.util.ArrayList<>()).add(key);
            }
        }

        // Remove old versions
        int removed = 0;