Kong/Scylladb在写路由时出现间歇性超时问题，错误提示'receivedonly0responses2”-K8”

该问题可能是由于Scylladb未正确配置导致的。可以在Scylladb配置中增加cdc_raw_directory选项来解决这个问题。以下是一个示例：

[supervisord]
nodaemon=true

[program:scylla]
command=/usr/bin/scylla --log-to-stderr
stderr_logfile=/var/log/scylla/scylla.stderr.log
stdout_logfile=/var/log/scylla/scylla.stdout.log
autostart=true
autorestart=true
user=scylla

[cqlsh]
command=/usr/bin/cqlsh

[cqlshrc file]
command=echo "[connection]\nhostname = localhost\nport = 9042" > /etc/cassandra/cqlshrc

[program:scylla-cdc]
command=/usr/bin/scylla-cdc -c /etc/scylla/scylla.yaml
directory=/var/lib/scylla/cdc
process_name=cdc_%(process_num)s
numprocs=4
autostart=true
autorestart=true

[program:scylla-cdc-raw]
command=/usr/bin/scylla-cdc-raw -c /etc/scylla/scylla.yaml
directory=/var/lib/scylla/cdc_raw
process_name=cdc_raw_%(process_num)s
numprocs=4
autostart=true
autorestart=true

[program:kong]
command=/usr/local/bin/kong start
user=kong

同时，应该确保Kong版本是最新的，并且可以增加以下Kong配置：

cassandra_consistency = QUORUM
cassandra_repl_factor = 3
cassandra_socket_timeout = 2000

这个问题也可能与Kong的高可用配置有关。您可以通过添加以下配置来解决此问题：

proxy_cache_valid any 10s;
proxy_cache_bypass $http_pragma;
proxy_cache_revalidate on;
proxy_intercept_errors on;