conf.d/api_gateway_init.conf

#/*
# * Licensed to the Apache Software Foundation (ASF) under one or more
# * contributor license agreements.  See the NOTICE file distributed with
# * this work for additional information regarding copyright ownership.
# * The ASF licenses this file to You under the Apache License, Version 2.0
# * (the "License"); you may not use this file except in compliance with
# * the License.  You may obtain a copy of the License at
# *
# *     http://www.apache.org/licenses/LICENSE-2.0
# *
# * Unless required by applicable law or agreed to in writing, software
# * distributed under the License is distributed on an "AS IS" BASIS,
# * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# * See the License for the specific language governing permissions and
# * limitations under the License.
# */

server_names_hash_bucket_size  128;

# Sendfile copies data between one FD and other from within the kernel.
# More efficient than read() + write(), since the requires transferring data to and from the user space.
sendfile        on;

# Tcp_nopush causes nginx to attempt to send its HTTP response head in one packet,
# instead of using partial frames. This is useful for prepending headers before calling sendfile,
# or for throughput optimization.
tcp_nopush     on;

# Caches information about open FDs, freqently accessed files.
open_file_cache max=200000 inactive=20s;
open_file_cache_valid 30s;
open_file_cache_min_uses 2;
open_file_cache_errors on;

# allow the server to close the connection after a client stops responding. Frees up socket-associated memory.
reset_timedout_connection on;

#gzip  on;


# be prepared to load any custom lua scripts from /etc/api-gateway/scripts
lua_package_path '/etc/api-gateway/scripts/lua/?.lua;;';
init_worker_by_lua_file /etc/api-gateway/scripts/lua/api_gateway_init.lua;

lua_shared_dict cachedkeys 50m; # caches api-keys
lua_shared_dict cachedOauthTokens 50m; # caches OAuth tokens
lua_shared_dict cachedUserProfiles 50m; # caches user profiles
lua_shared_dict healthcheck_redis 1m; # used by lua health_check for redis cache