diff --git a/README.md b/README.md
index ace28bb..0600148 100644
--- a/README.md
+++ b/README.md
@@ -12,13 +12,37 @@ See [`CONTRIBUTING.md`](./CONTRIBUTING.md).
 
 ## Environment Variables
 
-* `SG_ENV` = set to `production` for production log levels
-* `SMTP_SERVER` = hostname of the SMTP server for sending emails. i.e. smtp.example.com
-* `SMTP_PORT` = port to connect to the SMTP server
-* `SMTP_USER` = username if any required, will not authenticate if this is left blank
-* `SMTP_PASS` = password if required
-* `SMTP_SECURE` = left blank for clear text, `SMTPS` for a TLS connection, `STARTTLS` for negotiating TLS on an initial clear text connection
-* `REDIS_URL` = the redis connection string, defaults to `redis://localhost:6379`
+### Core Configuration
+
+- `SG_ENV` = set to `production` for production log levels (default: `development`)
+- `SG_SERVER_PORT` = server port (default: `3000`)
+- `SG_SERVER_HOST` = server host (default: `127.0.0.1`)
+- `SG_PROCESS_COUNT` = number of processes (default: `1`)
+- `REDIS_URL` = the redis connection string, defaults to `redis://localhost:6379`
+
+### SMTP Configuration
+
+- `SMTP_SERVER` = hostname of the SMTP server for sending emails (default: `smtp.example.com`)
+- `SMTP_PORT` = port to connect to the SMTP server (default: `25`)
+- `SMTP_USER` = username if any required, will not authenticate if this is left blank
+- `SMTP_PASS` = password if required
+- `SMTP_SECURE` = left blank for clear text, `SMTPS` for a TLS connection, `STARTTLS` for negotiating TLS on an initial clear text connection
+
+### Telemetry (PlaceOS Pulse)
+
+- `PLACE_PULSE_ENABLED` = enable telemetry (set to `1` or `true`)
+- `PLACE_DOMAIN` = domain for telemetry instance
+- `PLACE_PULSE_INSTANCE_EMAIL` = email for telemetry instance
+
+### Trigger Intervals
+
+- `UPDATE_CHECK_INTERVAL` = driver update check interval (default: `2h`)
+- `GRAPH_SECRET_CHECK_INTERVAL` = graph secret expiry check interval (default: `24h`)
+- `LOKI_SEARCH_CHECK_INTERVAL` = Loki error search interval (default: `1h`)
+- `LOKI_SEARCH_WINDOW` = Loki search time window (default: `24h`)
+
+**Duration Format**: Intervals support flexible formats like `5m`, `1h20m`, `2h30m45s`, etc.
+**Note**: Invalid formats (like `"5"` without postfix, `"invalid"`, etc.) will be treated as zero duration, which may cause unexpected behavior. Always include proper time units (`h`, `m`, `s`).
 
 ## Bindings
 
diff --git a/spec/loki_search_errors_spec.cr b/spec/loki_search_errors_spec.cr
new file mode 100644
index 0000000..2f1a524
--- /dev/null
+++ b/spec/loki_search_errors_spec.cr
@@ -0,0 +1,241 @@
+require "./helper"
+
+module PlaceOS::Triggers
+  describe LokiSearchForErrors do
+    it "performs bulk update using UNNEST with array parameters" do
+      # Create test modules
+      mod1 = PlaceOS::Model::Generator.module.save!
+      mod1.running = true
+      mod1.save!
+
+      mod2 = PlaceOS::Model::Generator.module.save!
+      mod2.running = true
+      mod2.save!
+
+      mod3 = PlaceOS::Model::Generator.module.save!
+      mod3.running = true
+      mod3.save!
+
+      # Prepare test data
+      mod_ids = [mod1.id.as(String), mod2.id.as(String), mod3.id.as(String)]
+      timestamps = [
+        Time.utc - 1.hour,
+        Time.utc - 30.minutes,
+        Time.utc - 15.minutes,
+      ]
+
+      # Execute the bulk update SQL directly (same as in the actual code)
+      sql = <<-SQL
+        UPDATE #{PlaceOS::Model::Module.table_name}
+        SET has_runtime_error = true,
+            error_timestamp = data.timestamp
+        FROM (
+          SELECT UNNEST($1::text[]) AS id,
+                 UNNEST($2::timestamptz[]) AS timestamp
+        ) AS data
+        WHERE #{PlaceOS::Model::Module.table_name}.id = data.id
+      SQL
+
+      result = PgORM::Database.connection do |dbc|
+        dbc.exec(sql, mod_ids, timestamps)
+      end
+
+      # Verify the update was successful
+      result.rows_affected.should eq(3)
+
+      # Verify the modules were updated correctly
+      mod1.reload!
+      mod2.reload!
+      mod3.reload!
+
+      mod1.has_runtime_error.should be_true
+      mod2.has_runtime_error.should be_true
+      mod3.has_runtime_error.should be_true
+
+      # PostgreSQL truncates to microsecond precision, so compare with tolerance
+      mod1.error_timestamp.not_nil!.to_unix.should eq(timestamps[0].to_unix)
+      mod2.error_timestamp.not_nil!.to_unix.should eq(timestamps[1].to_unix)
+      mod3.error_timestamp.not_nil!.to_unix.should eq(timestamps[2].to_unix)
+    end
+
+    it "only updates running modules" do
+      # Create test modules - some running, some not
+      running_mod = PlaceOS::Model::Generator.module.save!
+      running_mod.running = true
+      running_mod.save!
+
+      stopped_mod = PlaceOS::Model::Generator.module.save!
+      stopped_mod.running = false
+      stopped_mod.save!
+
+      # Try to update both
+      mod_ids = [running_mod.id.as(String), stopped_mod.id.as(String)]
+      timestamps = [Time.utc - 1.hour, Time.utc - 30.minutes]
+
+      # Get only running module IDs (simulating the actual code logic)
+      running_module_ids = PlaceOS::Model::Module.where(running: true).pluck(:id).to_set
+
+      # Filter updates to only running modules
+      updates = Hash.zip(mod_ids, timestamps).select { |mod_id, _| running_module_ids.includes?(mod_id) }
+
+      # Execute bulk update only for running modules
+      sql = <<-SQL
+        UPDATE #{PlaceOS::Model::Module.table_name}
+        SET has_runtime_error = true,
+            error_timestamp = data.timestamp
+        FROM (
+          SELECT UNNEST($1::text[]) AS id,
+                 UNNEST($2::timestamptz[]) AS timestamp
+        ) AS data
+        WHERE #{PlaceOS::Model::Module.table_name}.id = data.id
+      SQL
+
+      result = PgORM::Database.connection do |dbc|
+        dbc.exec(sql, updates.keys, updates.values)
+      end
+
+      # Should only update 1 module (the running one)
+      result.rows_affected.should eq(1)
+
+      # Verify only the running module was updated
+      running_mod.reload!
+      stopped_mod.reload!
+
+      running_mod.has_runtime_error.should be_true
+      stopped_mod.has_runtime_error.should be_false
+    end
+
+    it "handles empty updates gracefully" do
+      # Execute with empty arrays
+      sql = <<-SQL
+        UPDATE #{PlaceOS::Model::Module.table_name}
+        SET has_runtime_error = true,
+            error_timestamp = data.timestamp
+        FROM (
+          SELECT UNNEST($1::text[]) AS id,
+                 UNNEST($2::timestamptz[]) AS timestamp
+        ) AS data
+        WHERE #{PlaceOS::Model::Module.table_name}.id = data.id
+      SQL
+
+      result = PgORM::Database.connection do |db|
+        db.exec(sql, [] of String, [] of Time)
+      end
+
+      # Should affect 0 rows
+      result.rows_affected.should eq(0)
+    end
+
+    it "validates pg-orm DSL query for running modules" do
+      # Create a mix of running and stopped modules
+      running_mod1 = PlaceOS::Model::Generator.module.save!
+      running_mod1.running = true
+      running_mod1.save!
+
+      running_mod2 = PlaceOS::Model::Generator.module.save!
+      running_mod2.running = true
+      running_mod2.save!
+
+      stopped_mod1 = PlaceOS::Model::Generator.module.save!
+      stopped_mod1.running = false
+      stopped_mod1.save!
+
+      stopped_mod2 = PlaceOS::Model::Generator.module.save!
+      stopped_mod2.running = false
+      stopped_mod2.save!
+
+      # Test the exact DSL query used in the implementation
+      running_module_ids = PlaceOS::Model::Module.where(running: true).pluck(:id).to_set
+
+      # Verify it returns only running module IDs
+      running_module_ids.should contain(running_mod1.id)
+      running_module_ids.should contain(running_mod2.id)
+      running_module_ids.should_not contain(stopped_mod1.id)
+      running_module_ids.should_not contain(stopped_mod2.id)
+
+      # Verify the count is correct
+      running_module_ids.size.should be >= 2 # At least our 2 running modules
+
+      # Verify the DSL query works correctly for filtering (the key functionality)
+      test_module_ids = [running_mod1.id.as(String), stopped_mod1.id.as(String)]
+      filtered = test_module_ids.select { |id| running_module_ids.includes?(id) }
+      filtered.should eq([running_mod1.id])
+
+      # Verify it supports O(1) lookups (Set behavior)
+      running_module_ids.includes?(running_mod1.id).should be_true
+      running_module_ids.includes?(stopped_mod1.id).should be_false
+    end
+
+    it "handles large batch updates efficiently" do
+      # Create 100 test modules
+      modules = Array.new(100) do
+        mod = PlaceOS::Model::Generator.module.save!
+        mod.running = true
+        mod.save!
+        mod
+      end
+
+      mod_ids = modules.map(&.id.as(String))
+      timestamps = Array.new(100) { |i| Time.utc - i.minutes }
+
+      # Execute bulk update
+      sql = <<-SQL
+        UPDATE #{PlaceOS::Model::Module.table_name}
+        SET has_runtime_error = true,
+            error_timestamp = data.timestamp
+        FROM (
+          SELECT UNNEST($1::text[]) AS id,
+                 UNNEST($2::timestamptz[]) AS timestamp
+        ) AS data
+        WHERE #{PlaceOS::Model::Module.table_name}.id = data.id
+      SQL
+
+      result = PgORM::Database.connection do |db|
+        db.exec(sql, mod_ids, timestamps)
+      end
+
+      # Should update all 100 modules in a single query
+      result.rows_affected.should eq(100)
+
+      # Spot check a few modules
+      modules[0].reload!
+      modules[50].reload!
+      modules[99].reload!
+
+      modules[0].has_runtime_error.should be_true
+      modules[50].has_runtime_error.should be_true
+      modules[99].has_runtime_error.should be_true
+    end
+
+    it "uses configurable search window with flexible duration format" do
+      # Test that it uses the LOKI_SEARCH_WINDOW constant and parses it correctly
+      searcher = LokiSearchForErrors.new(1.minute)
+      expected_window = PlaceOS::Triggers.extract_time_span(PlaceOS::Triggers::LOKI_SEARCH_WINDOW)
+      searcher.@search_window.should eq(expected_window)
+
+      # Default should be 24 hours
+      searcher.@search_window.should eq(24.hours)
+    end
+
+    it "validates duration parsing supports various formats" do
+      # Test the extract_time_span method with different formats
+      PlaceOS::Triggers.extract_time_span("5m").should eq(5.minutes)
+      PlaceOS::Triggers.extract_time_span("1h20m").should eq(1.hour + 20.minutes)
+      PlaceOS::Triggers.extract_time_span("5h").should eq(5.hours)
+      PlaceOS::Triggers.extract_time_span("30s").should eq(30.seconds)
+      PlaceOS::Triggers.extract_time_span("2h30m45s").should eq(2.hours + 30.minutes + 45.seconds)
+    end
+
+    it "handles edge cases in duration parsing" do
+      # Test what happens with just a number (no postfix)
+      PlaceOS::Triggers.extract_time_span("5").should eq(Time::Span.zero)
+
+      # Test empty string
+      PlaceOS::Triggers.extract_time_span("").should eq(Time::Span.zero)
+
+      # Test invalid formats - also return zero duration (regex matches but captures nothing)
+      PlaceOS::Triggers.extract_time_span("invalid").should eq(Time::Span.zero)
+      PlaceOS::Triggers.extract_time_span("5x").should eq(Time::Span.zero)
+    end
+  end
+end
diff --git a/src/constants.cr b/src/constants.cr
index 09ec57b..0f3fa03 100644
--- a/src/constants.cr
+++ b/src/constants.cr
@@ -31,6 +31,7 @@ module PlaceOS::Triggers
   DRIVER_UPDATE_CHECK_INTERVAL = ENV["UPDATE_CHECK_INTERVAL"]? || "2h"
   GRAPH_SECRET_CHECK_INTERVAL  = ENV["GRAPH_SECRET_CHECK_INTERVAL"]? || "24h"
   LOKI_SEARCH_CHECK_INTERVAL   = ENV["LOKI_SEARCH_CHECK_INTERVAL"]? || "1h"
+  LOKI_SEARCH_WINDOW           = ENV["LOKI_SEARCH_WINDOW"]? || "24h"
 
   class_getter? production : Bool = ENVIRONMENT.downcase == "production"
   class_getter? pulse_enabled : Bool = PULSE_ENABLED
diff --git a/src/placeos-triggers/loki_search_errrors.cr b/src/placeos-triggers/loki_search_errrors.cr
index f1924e9..54a0e9b 100644
--- a/src/placeos-triggers/loki_search_errrors.cr
+++ b/src/placeos-triggers/loki_search_errrors.cr
@@ -9,6 +9,7 @@ module PlaceOS::Triggers
 
     def initialize(@repeat_interval : Time::Span)
       @client = Loki::Client.from_env
+      @search_window = Triggers.extract_time_span(LOKI_SEARCH_WINDOW)
     end
 
     def self.new(interval : String)
@@ -22,30 +23,72 @@ module PlaceOS::Triggers
 
       Tasker.every(@repeat_interval) do
         Log.debug { "Searching Loki for runtime error logs of all running modules" }
-        PlaceOS::Model::Module.where(running: true).each do |mod|
-          Log.debug { {message: "Searching Loki for module errors", module: mod.id, driver: mod.driver_id} }
-          begin
-            errors = Array(Tuple(String, String)).new
-            result = @client.query_range(query, 1000, Time.utc - 24.hour, Time.utc, Loki::Direction::Backward)
-            result.response_data.result.as(Loki::Model::Streams).each do |resp_stream|
-              map = resp_stream.labels.map
-              errors << {map["source"], map["time"]}
-            end
-            if errors.empty?
-              Log.info { "No module runtime errors found. Skipping..." }
-              next
-            end
 
-            errors = errors.uniq { |v| v[0] }
-            errors.each do |mod_id, time|
-              err_time = Time::Format::RFC_3339.parse(time)
-              PlaceOS::Model::Module.update(mod_id, {has_runtime_error: true, error_timestamp: err_time})
+        begin
+          # Query Loki once for all modules
+          result = @client.query_range(query, 1000, Time.utc - @search_window, Time.utc, Loki::Direction::Backward)
+
+          # Build a map of module_id => latest error timestamp
+          module_errors = Hash(String, Time).new
+          result.response_data.result.as(Loki::Model::Streams).each do |resp_stream|
+            map = resp_stream.labels.map
+
+            # Nil-safe extraction
+            mod_id = map["source"]?
+            time_str = map["time"]?
+
+            next unless mod_id && time_str
+
+            begin
+              err_time = Time::Format::RFC_3339.parse(time_str)
+              # Keep only the latest error per module
+              if !module_errors.has_key?(mod_id) || err_time > module_errors[mod_id]
+                module_errors[mod_id] = err_time
+              end
             rescue ex
-              Log.error(exception: ex) { {message: "Exception received when updating module", module: mod_id, timestamp: time} }
+              Log.error(exception: ex) { {message: "Failed to parse timestamp", module: mod_id, timestamp: time_str} }
             end
-          rescue ex
-            Log.error(exception: ex) { "Exception received" }
           end
+
+          if module_errors.empty?
+            Log.info { "No module runtime errors found. Skipping..." }
+            next
+          end
+
+          Log.debug { {message: "Found errors for modules", count: module_errors.size} }
+
+          # Get all running module IDs for validation
+          running_module_ids = PlaceOS::Model::Module.where(running: true).pluck(:id).to_set
+
+          # Filter to only running modules
+          updates = module_errors.select { |mod_id, _| running_module_ids.includes?(mod_id) }
+
+          if updates.empty?
+            Log.info { "No running modules with errors to update. Skipping..." }
+            next
+          end
+
+          # Bulk update using UNNEST - single database query
+          mod_ids = updates.keys
+          timestamps = updates.values
+
+          sql = <<-SQL
+            UPDATE #{PlaceOS::Model::Module.table_name}
+            SET has_runtime_error = true,
+                error_timestamp = data.timestamp
+            FROM (
+              SELECT UNNEST($1::text[]) AS id,
+                     UNNEST($2::timestamptz[]) AS timestamp
+            ) AS data
+            WHERE #{PlaceOS::Model::Module.table_name}.id = data.id
+          SQL
+
+          PgORM::Database.connection do |db|
+            db.exec(sql, mod_ids, timestamps)
+          end
+          Log.info { {message: "Bulk updated modules with runtime errors", count: updates.size} }
+        rescue ex
+          Log.error(exception: ex) { "Exception received while searching Loki" }
         end
       end
     end