Class: SolidStackWeb::CacheSizeStats

Inherits:
Object
  • Object
show all
Defined in:
app/models/solid_stack_web/cache_size_stats.rb

Constant Summary collapse

BUCKETS = 
[
  { label: "< 1 KB",       min: 0,       max: 1_024 },
  { label: "1 – 10 KB",    min: 1_024,   max: 10_240 },
  { label: "10 – 100 KB",  min: 10_240,  max: 102_400 },
  { label: "100 KB – 1 MB", min: 102_400, max: 1_048_576 },
  { label: "> 1 MB",       min: 1_048_576, max: nil }
].freeze
TOP_N = 
10

Instance Method Summary collapse

Instance Method Details

#buckets ⇒ Object 



20
21
22
23
24
25
26
27
28
29
30
31
 
# File 'app/models/solid_stack_web/cache_size_stats.rb', line 20

def buckets
  @buckets ||= begin
    row = ::SolidCache::Entry.pluck(
      Arel.sql("COALESCE(SUM(CASE WHEN byte_size < 1024 THEN 1 ELSE 0 END), 0)"),
      Arel.sql("COALESCE(SUM(CASE WHEN byte_size >= 1024 AND byte_size < 10240 THEN 1 ELSE 0 END), 0)"),
      Arel.sql("COALESCE(SUM(CASE WHEN byte_size >= 10240 AND byte_size < 102400 THEN 1 ELSE 0 END), 0)"),
      Arel.sql("COALESCE(SUM(CASE WHEN byte_size >= 102400 AND byte_size < 1048576 THEN 1 ELSE 0 END), 0)"),
      Arel.sql("COALESCE(SUM(CASE WHEN byte_size >= 1048576 THEN 1 ELSE 0 END), 0)")
    ).first || Array.new(5, 0)
    BUCKETS.zip(row).map { |b, count| { label: b[:label], count: count.to_i } }
  end
end

#top_entries ⇒ Object 



13
14
15
16
17
18
 
# File 'app/models/solid_stack_web/cache_size_stats.rb', line 13

def top_entries
  @top_entries ||= ::SolidCache::Entry
                     .select(:id, :key, :byte_size)
                     .order(byte_size: :desc)
                     .limit(TOP_N)
end

#total ⇒ Object 



33
34
35
 
# File 'app/models/solid_stack_web/cache_size_stats.rb', line 33

def total
  @total ||= buckets.sum { |b| b[:count] }
end