My production configuration for Cassandra, Kafka, Presto

cassandra.yaml

cluster_name: 'DataCollection Cluster'
listen_address: 192.168.23.64
rpc_address: 192.168.23.64
native_transport_port: 9042
storage_port: 7000

seed_provider:
    - class_name: org.apache.cassandra.locator.SimpleSeedProvider
      parameters:
          # seeds is actually a comma-delimited list of addresses.
          # Ex: "<ip1>,<ip2>,<ip3>"
          - seeds: "192.168.23.64,192.168.23.65,192.168.23.66"
          
concurrent_reads: 256
concurrent_writes: 400
concurrent_counter_writes: 32

# Use native os cache to store memtable
memtable_allocation_type: offheap_objects

# The number of memtable flush writer threads. These threads are blocked 
# by disk I/O, and each one holds a memtable in memory while blocked. 
# If your data directories are backed by SSDs, increase this setting to the number of cores.
memtable_flush_writers: 8

# Optimize strategy for disk: spinning or ssd
disk_optimization_strategy: spinning

# Total memory to use for SSTable-reading buffers.
file_cache_size_in_mb: 8192

# Maximum size of the key cache in memory
key_cache_size_in_mb: 8192

# one or more directories where data files are located.
data_file_directories: /data/cassandra/data

# the directory where commitlog files are located.
commitlog_directory: /storage/cassandra/cassandra-data/commitlog

# : the directory where saved caches are located.
saved_caches_directory: /storage/cassandra/cassandra-data/saved_caches

# the directory where hints are located.
hints_directory: /storage/cassandra/cassandra-data/hints

kafka-server.properties

zookeeper.connect=192.168.23.64:2181,192.168.23.65:2181

broker.id=65
listeners=PLAINTEXT://192.168.23.65:9092
auto.create.topics.enable=true
min.insync.replicas=2
delete.topic.enable=true

# Log configuration
num.partitions=3
default.replication.factor=2
log.dirs=/storage/kafka/kafka-data,/data/kafka-data

# The minimum age of a log file to be eligible for deletion due to age
log.retention.hours=720

# Log retention window in minutes for offsets topic
offsets.retention.minutes=14400

# Increase max message in bytes
replica.fetch.max.bytes = 10485760
message.max.bytes = 10485760
max.message.bytes = 10485760

# The number of threads handling network requests
num.network.threads=3

# The number of threads doing disk I/O
num.io.threads=8

# The send buffer (SO_SNDBUF) used by the socket server
socket.send.buffer.bytes=1024000

# The receive buffer (SO_RCVBUF) used by the socket server
socket.receive.buffer.bytes=1024000