Remove unused code

Gemfile

@@ -25,7 +25,6 @@ gem 'kaminari'
 gem 'lograge'
 gem 'oj'
 gem 'parallel'
-gem 'yajl-ruby', '~> 1.4'
 gem 'pg'
 gem 'prometheus_exporter'
 gem 'puma'

Gemfile.lock

@@ -521,7 +521,6 @@ GEM
     websocket-extensions (0.1.5)
     xpath (3.2.0)
       nokogiri (~> 1.8)
-    yajl-ruby (1.4.3)
     zeitwerk (2.7.3)
 
 PLATFORMS
@@ -599,7 +598,6 @@ DEPENDENCIES
   turbo-rails
   tzinfo-data
   webmock
-  yajl-ruby (~> 1.4)
 
 RUBY VERSION
    ruby 3.4.6p54

app/services/users/import_data/json_streamer.rb

@@ -1,55 +0,0 @@
-# frozen_string_literal: true
-
-require 'yajl'
-
-class Users::ImportData::JsonStreamer
-  def initialize(zip_entry)
-    @zip_entry = zip_entry
-    @memory_tracker = Users::ImportData::MemoryTracker.new
-  end
-
-  def stream_parse
-    Rails.logger.info "Starting JSON streaming for #{@zip_entry.name} (#{@zip_entry.size} bytes)"
-
-    @memory_tracker.log("before_streaming")
-
-    data = {}
-
-    @zip_entry.get_input_stream do |input_stream|
-      parser = Yajl::Parser.new(symbolize_keys: false)
-
-      # Set up the parser to handle objects
-      parser.on_parse_complete = proc do |parsed_data|
-        Rails.logger.info "JSON streaming completed, parsed #{parsed_data.keys.size} entity types"
-
-        # Process each entity type
-        parsed_data.each do |entity_type, entity_data|
-          if entity_data.is_a?(Array)
-            Rails.logger.info "Streamed #{entity_type}: #{entity_data.size} items"
-          end
-        end
-
-        data = parsed_data
-        @memory_tracker.log("after_parsing")
-      end
-
-      # Stream parse the JSON
-      begin
-        parser.parse(input_stream)
-      rescue Yajl::ParseError => e
-        raise StandardError, "Invalid JSON format in data file: #{e.message}"
-      end
-    end
-
-    @memory_tracker.log("streaming_completed")
-
-    data
-  rescue StandardError => e
-    Rails.logger.error "JSON streaming failed: #{e.message}"
-    raise e
-  end
-
-  private
-
-  attr_reader :zip_entry
-end

app/services/users/import_data/memory_tracker.rb

@@ -1,44 +0,0 @@
-# frozen_string_literal: true
-
-class Users::ImportData::MemoryTracker
-  def initialize
-    @process_id = Process.pid
-    @start_time = Time.current
-  end
-
-  def log(stage)
-    memory_mb = current_memory_usage
-    elapsed = elapsed_time
-
-    Rails.logger.info "Memory usage at #{stage}: #{memory_mb} MB (elapsed: #{elapsed}s)"
-
-    # Log a warning if memory usage is high
-    if memory_mb > 1000 # 1GB
-      Rails.logger.warn "High memory usage detected: #{memory_mb} MB at stage #{stage}"
-    end
-
-    { memory_mb: memory_mb, elapsed: elapsed, stage: stage }
-  end
-
-  private
-
-  def current_memory_usage
-    # Get memory usage from /proc/PID/status on Linux or fallback to ps
-    if File.exist?("/proc/#{@process_id}/status")
-      status = File.read("/proc/#{@process_id}/status")
-      match = status.match(/VmRSS:\s+(\d+)\s+kB/)
-      return match[1].to_i / 1024.0 if match # Convert KB to MB
-    end
-
-    # Fallback to ps command (works on macOS and Linux)
-    memory_kb = `ps -o rss= -p #{@process_id}`.strip.to_i
-    memory_kb / 1024.0 # Convert KB to MB
-  rescue StandardError => e
-    Rails.logger.warn "Failed to get memory usage: #{e.message}"
-    0.0
-  end
-
-  def elapsed_time
-    (Time.current - @start_time).round(2)
-  end
-end

config/initializers/03_dawarich_settings.rb

@@ -4,7 +4,6 @@ class DawarichSettings
   BASIC_PAID_PLAN_LIMIT = 10_000_000 # 10 million points
 
   class << self
-
     def reverse_geocoding_enabled?
       @reverse_geocoding_enabled ||= photon_enabled? || geoapify_enabled? || nominatim_enabled?
     end
@@ -40,10 +39,6 @@ class DawarichSettings
       @store_geodata ||= STORE_GEODATA
     end
 
-    def import_batch_size
-      @import_batch_size ||= (ENV['IMPORT_BATCH_SIZE'].presence || 2500).to_i
-    end
-
     def features
       @features ||= {
         reverse_geocoding: reverse_geocoding_enabled?